There is an infinite grid with square cells. the resistance of each wire between neighboring joint connections is equal to the resistance R 0. Find the resistance R of the whole grid between points A and B. This is an interesting question from the famous book for physics olympiads-Problems in general physics by I.E. Irodov I'll start with the simplest case (see image below) and add more and more resistors to try and approximate an infinite grid of resistors. Notation: The simplest grid (with the fewest resistors) is shown below this paragraph. It has six nodes and seven resistors, arranged with three nodes across and two nodes vertically This is part one of a two part series in solving two classic resistor network problems. In this part 1, the infinite Resistor Grid with equal value resistor..

infinite grid of resistors connecting adjacent nodes of a square lattice. A small portion of such a grid is illustrated below. Between every pair of adjacent nodes is a resistance R, and we're told that this grid of resistors extends to infinity in al To clarify: the grid in question is infinite in 2 dimensions, not just1. The method mentioned by scodad works fine for an infinite ladderof resistors, but since the answer has a pi in it, there..

It goes, On this infinite grid of ideal one-ohm resistors, what is the equivalent between the two marked nodes? ( just the image ) Assuming the two marked nodes are where a generator capable of producing an infinitely large current is hooked up, is there a theoretical solution to this problem On a very large -> infinite grid. If you have a reference point at node x and you measure the resistance further and further away from the reference towards infinity you will find that your resistance increases and also tends towards infinity. Nov 18, 2011 # ** R1 = G3 G1 +G2 +G3, R2 = G2 G1 +G2 +G3, R3 = G1 G1 +G2 +G3 where R1,R2,R3 = the resistances in the corresponding Tee section**. Two things happen: The number of shunt **resistors** **is** now halved, and each shunt **resistor** has decreased in value. **There** are now more series **resistors**, whose values can be added (The Laplacian of a constant potential vanishes.) When doing the integrals, you have to discard a few infinities, as the infinite grid of resistors is not quite physically reasonable. Remember that the full Greens function also depends on energy E. In this case, it has a singularity at E=0

You can get more resolution than that though - between each pair of electrodes you can measure more than just the DC resistance - you can measure AC impedance at an infinite number of frequencies However, with an infinite grid, there are infinite paths and infinite combinations, therefore their equivalent parallel resistance must asymptotically approach 0. I believe a sum of conductances will confirm this as the denominator will grow significantly faster than the numerator due to the increased resistance of the longer paths With an infinite grid of equal resistors, you have an infinite number of paths to take, and for each path an infinite number of both series and parallel paths to consider, so much more advanced methods are needed. The exact answer to the question is 4/π − 1/2 ohms, or about 0.773 ohms. See Infinite Grid of Resistors Well this could have been a classic sum had been an infinite maze. But its quite easy as it s a ladder. The thing you have to note is that this is an infinite arangement.Lets say that the resisatnce betwen a and b is R. Then you can assume that after the c d branch you can replace the remaining ladder with R

The given infinite grid consists of hexagonal cells of six resistors each of resistance R. The given infinite grid consists of hexagonal cells of six resistors each of resistance R Click hereto get an answer to your question ️ 52. Consider an infinite grid with square cells. The resistance between two adjacent joints is R. Find the net resistance Rnet of the whole grid between two points A & B. (1) R (2) R/2 (3) R/4 (4) 4

nodes of an infinite resistor grid is actually indeterminate unless we impose restrictions on the voltage and current levels at infinity (such as stipulating that we seek the solution for a finite grid in the limit as the size of the grid increases to infinity)

Next: Infinite ladder of resistors Equivalent resistance for infinite grids of resistors . One of the classic ``hard'' questions for early Electrical Engineering students is finding the equivalent resistance for an arrangement of resistors connected, in a regular way, without bound Infinite 2D square grid of resistors The infinite 2-dimensional square grid of resistors, assumed to be each, shown in figure 2. Figure 2: Infinite resistor grid (2D square) In this section, the.. This is because the resistors are connected in parallel. We know that in any group of resistors connected in parallel, the total resistance is always less than the lowest resistance in the group. Since there is an infinite amount of one Ohm resistors in parallel, the total goes to zero. 2) Answer: true First of all the assumption that a specific infinite network of resistors has a solution is premised on the existence of a theory of infinite networks. Until Flanders [7], this did not exist. Second, the solution given above must satisfy the requirements of this theory of infinite networks in order that it be the correct solution to the given grid problem The square grid shown in Figure 1 is of size 7. It can be seen that this grid has 25 interior nodes and 4 groups of 5 boundary nodes. In general, a grid with size n has (n-2)2 interior nodes and 4(n-2) boundary nodes, which gives a total number of (n2-4) nodes [2]. Nodal analysis of finite square resistive grids and the teaching effectiveness o

- als A-B, then after going through an infinite number of voltage dividers the output voltage at ter
- Infinite Grid of Resistors How to Start and Stop Folding@Home on OSX Lego Rendering with POV-Ray Class Scheduler Lightsaber Rotoscoping Scripts Handy Scripts GPG Tips and Tricks NCAA Basketball Tournament Dat
- Click hereto get an answer to your question ️ The given infinite grid consists of hexagonal cells of six resistor each of resistance R . Then Req12 is
- This work is licensed under a Creative Commons Attribution-NonCommercial 2.5 License. This means you're free to copy and share these comics (but not to sell them). More details.
- Homework 1: Grid of Resistors. Due Thursday, 3/11/2004 . Hints General: It might help to draw a good picture of the grid. Number all the rows and columns, mark out the two source positions, and identify the red and the black nodes

I was in kotigeni most of the weekend killing goids and running passenger evac missions at shaw port, and many of those missions were offering grid resistors as rewards. In fact, there were grid resistors floating in the station debris too. EDIT: Ninja'd by @dragoni However, there exist uncountably infinite graphs with only one end in which every spanning tree has infinitely many ends. If G is an infinite grid graph, then it has many rays, and arbitrarily large sets of vertex-disjoint rays. However, it has only one end Consider an infinite, that is, very large, two-dimensional square grid of identical resistors, R, as shown in the figure. Find the equivalent resistance of Consider an infinite, that is, very large, two-dimensional square grid of identical resistors, R, as shown in the figure. Find the equivalent resistance of the grid, as measured across any individual resistor. (Hint: Symmetry and superposition are very helpful for solving this problem. Use the following as necessary: R.) Req

11- Infinite simple 3D cubic lattice of identical resistors (two missing bonds) By jihad asad On the resistance of an infinite square network of identical resistors - Theoretical and experimental compariso There are a few measurements that can pop up on your screen. Aside from the measurement you're expecting when you're measuring a resistor with a 1,000 Ω resistance, there are some other measurements you can see come up on your screen. One of those is OL or infinite resistance. What is infinite resistance on a digital multimeter A grid of 1 ohm resistors has appeared earlier in 356: Nerd Sniping, a comic also referred to in the title text. An arena , with a few bodies in it. Note the direction of movement enforced by the surrounding diodes, two men enter, one man leaves , a film reference I'm trying to solve a series circuit question from my DC Circuits class homework, and I can't seem to recall what infinate resistance means. Here is the info I have on the circuit. E=40v, R1=5ohms, R2=10ohms, R3= Infinate ohms. I see the answer in the back of the book, but I don't know how.. * Resistive grid*. In an infinite grid of 1-ohm resistors, what is the resistance measured across one resistor? To measure resistance, an ohmmeter injects a current ?? at one terminal (for simplicity, imagine that ?? = 1 ampere)

- A formula for the input conductivity characteristic of an infinite grid of similar, weakly nonlinear resistors (conductors) measured between two nodes is obtained using a specific approximate representation of the grid. This formula is more precise than the corresponding formula given earlier by Gluskin. Some hypotheses concerning the analytical features of the input resistive (conductive.
- als of S1 are connected appropriately with a voltage source. However, both sides of the resistors are not in contact with the voltage source when the switches are open, so no voltage can appear across them
- This preview shows page 16 - 19 out of 64 pages.. 9. Resistive grid In an infinite grid of 1-ohm resistors, what is the resistance mea- In an infinite grid of 1-ohm resistors, what is the resistance mea
- Apr 18, 2014 - This Pin was discovered by AMIE(I) Study Circle. Discover (and save!) your own Pins on Pinteres
- hexagonal grid of resistors On this infinite hexagonal grid of ideal one-ohm resistors, So we only have to solve the potential difference between our two nodes, given that there is an external current of 1 Amp in one marked node, and one of zero everywhere
- al electrical component that implements electrical resistance as a circuit element. In electronic circuits, resistors are used to reduce current flow, adjust signal levels, to divide voltages, bias active elements, and ter

* if the grid is truely infinite than there is no place to attach the power source so there would be no electricity for the resistors to resist*. By: Eoin The answer is 2/p A typical 3-500Z produces about 30-35 volts cathode bias with no resistor. Note there is very little change in bias voltage over the range of 2000 ohms to infinity! The cathode is an almost perfect constant voltage source at low currents. Grounded Grid Amp \$\begingroup\$ @BrianDrummond: Many resistors will have, in addition to their continuous-power rating, specifications which will allow higher amounts of power to be applied for short periods of time. Holding more than 100V across a 10K 1W 500V resistor would eventually cause it to overheat, but such a resistor could probably survive 125V for a second, or 250V for a quarter-second, or 500V for.

- 1. Infinite Lattices. I became interested in resistance network problems from the recurring questions posted to the rec.puzzles archive. In particular, the resistance between two adjacent nodes on an infinite 2D rectangular lattice of 1ohm resistors was given as ½ohm
- If current +I0 is injected at point A and allowed to ﬂow to inﬁnity, each of the resistors connected directly to point A will, by symmetry, carry I0/4 directed away from A. Similarly, if current −I0 is injected at point B, each resistor connected to B will carry current I0/4 directed toward B. Superposing these two solutions yields a solution where current is injected at A and extracted.
- For example an input 10Meg resistor could be used in combination with a T feedback network composed of two 10Meg resistors in series and a 1.25Meg resistor as the tap resistor from the 10Meg feedback resistor junction to the source. The forward bias grid conduction is not emulated with this version of the Trioderizer. Because of the input resistor

Dec 4, 2014 - On an infinite grid of ideal one ohm resistors, what is the equivalent resistance across the two marked point * Question: On This Infinite Grid Of Ideal One-ohm Resistors, What's The Equivalent Resistance Between The Two Marked Nodes? This problem has been solved! See the answer*. Show transcribed image text. Expert Answer . Previous question Next question Transcribed Image Text from this Question On the resistance between two points on a grid On the resistance between two points on a grid Venezian, Giulio 1994-11-01 00:00:00 The resistance between two adjacent nodes on an infinite square grid of equal resistors can easily be found by superposition. This paper addresses the corresponding problem for two arbitrary nodes There was one Ameritron amplifier where I added grid resistors in an attempt to better balance tubes. These resistors were not intended to be fuses! The resistors were to balance grid current better between tubes as the tubes aged and lost emission. This was the AL811H amplifier

I reject the notion that it's a certain type of brain that does this. Curiosity is a habit that can be either cultivated or ignored. That being said The shortest possible path between these two points is through three resistors, and there are thr.. Different Types of Resistor Chart/Tree. There are two basic types of resistors. Linear Resistors; Non Linear Resistors; Linear Resistors: Those resistors, which values change with the applied voltage and temperature, are called linear resistors. In other words, a resistor, which current value is directly proportional to the applied voltage is known as linear resistors About Automotive Resistors in Cars Window Defroster Grid . Automotive resistors are what control the current flow in electrical circuits. The definition of a resistor is a device specially constructed to put a specific amount of resistance into an electrical circuit * The topology of an electronic circuit is the form taken by the network of interconnections of the circuit components*. Different specific values or ratings of the components are regarded as being the same topology. Topology is not concerned with the physical layout of components in a circuit, nor with their positions on a circuit diagram; similarly to the mathematic concept of topology, it is.

Given an infinite square lattice of resistors, you are asked to find the resistance between any two points (one of them is fixed at the origin without loss of generality). Explanation . There is an analytic formula for the resistance R(i, j) that involves an awfully looking double integral. Obviously, numerical integration is out of question A resistor seldom fails short. If it is getting hot enough to fail, a short would typically dissipate even more power and cause the material to ignite or explode. That being said, there are some resistor constructions, like the bifilar wire wound (used for low-capacitance and low-inductance special resistors) that could short out internally Surface mount Resistors. The tolerance may be as low as 0.02% and consists of 3 or 4 letters as an indication. The smallest size of the 0201 packages is a tiny 0.60mm x 0.30mm resistor and this three number code works in a similar way to the color code bands on wire-ended resistors On an infinite grid of ideal one-ohm resistors, what's the equivalant resistance between two nodes a knights move away? (please fix the tags, I didn't really know where to put it) (7) Does anyone else think of Mass Ave. and MIT when looking at the cartoon? - Pete L. Clark. You. leave at infinity, or, essentially, that the network be 'grounded at infinity'. In the context of this infinite network theory, Flanders [8] and Zemanian [19] review the interesting history of the resistance problem we have introduced in this section, and show that the effective resistance between adjacent nodes in an unflawed planar grid is 2 0

There are many problems in online coding contests which involve finding a minimum-cost path in a grid, finding the number of ways to reach a particular position from a given starting point in a 2-D grid and so on. This post attempts to look at the dynamic programming approach to solve those problems. With R 2 at infinite resistance and total resistance is the sum of all individual resistances in a series circuit, the total current decreases to zero. With zero circuit current, there is no current to produce voltage drops across R 1 or R 3. R 2, on the other hand, will manifest the full supply voltage across its terminals Figure 2 shows the same circuit except now there has been a break in the wire between the resistor R1 and the positive terminal of the voltage source. That break is acts as an open in the circuit, i.e., it can be thought of as having infinite resistance The resistor cube in the photographs above is composed of 12 1,000-ohm resistors. The idea is to calculate the resistance between any two points on the cube, for which there are three possibilities. You can calculate the resistance across an edge of the cube, across a face diagonal or across a body diagonal

- The latter is apparently infinite, because the input circuit of the valve itself is a physical gap between the cathode and grid, with no current flowing in the grid circuit. However, the grid leak resistor appears in parallel with the grid-cathode path and, since this usually has a resistance of 1MΩ, this becomes the input resistance of the amplifier
- Fixed resistor symbols. The following resistor symbols are often used to depict resistors with a fixed value. The most used symbol is the international IEC resistor symbol displayed on the left but the American resistor symbol displayed on the right is also still used
- Resistor is defined as an electrical component which is used for controlling temperature and voltage. There are two types of resistors: linear resistor and non-linear resistor. Resistors are identified with the help of color codes. Resistor finds application in demodulator
- Unwanted Grid Voltage Most preamp tubes should show no voltage on their grids (12A*7 tubes' pins 2 & 7) except tubes that function as phase inverters or cathode followers where voltage on the grid is normal. If the preamp tube's grid leak resistor is tied directly to ground it should not have any voltage on it

LCL filter has been widely used in the grid connected inverter, since it is effective in attenuation of the switching frequency harmonics in the inverter. However, the resonance in this filter causes stability problems and must be damped effectively to achieve stability. There are some methods to damp the resonance; one method is passive damping of resonance by adding a series resistor with. Elektronische Bauelemente GmbH (EBG Resistors) is one the leading international manufacturer of Non-Inductive Thick Film resistors, producing standardized and customized resistors for the high-performance electronic industry. EBG concentrates on developing and producing highly reliable product lines to fill the creative requirements of the design engineer in today´s fast moving world There's a huge difference between a 0 Ω resistor and a 1 Ω resistor: the latter has an infinitely larger resistance :-).. The 0 Ω has different usages: selective connections. You can create variants of your circuit by placing or leaving out the jumper. Just like you would delete a connection in your schematic capture program (= remove jumper) and make a connection to a different point. The grid-leak resistor is chosen in the normal way, and 1Meg is usual. The upper triode: We already know that we have 200V of HT available for the upper triode and we can mark this point on the x-axis (blue dot), and we now also know that the anode current is 2.5mA (current through the triodes is the same because they are in series) In this rectangular grid run, Δx, Δy, and Δz were 100, 200, and 300 ft. The + lithology was isotropic, with a permeability of 100 md and a porosity of 20%, while the # lithology, at 800 md, was 30% porous.Lithotype & was anisotropic, with kx, ky and kz equal to 500, 600 and 700 md; it was 25% porous.Well 1 was pressure constrained at 5000 psi, while Well 2 was flow rate constrained at.

- g signal. The Grid is referenced to ground through the Grid resistor. The Grid resistor represents the input Impedance. Grid resistors of 100k 220k 470k and 1M2 are often seen in circuits. Load Impedance
- There is an infinite wire grid with cells in the form of equivalent triangles. The resistance of each wire between neighboring joint connections is R 0. The net resistance of the whole grid between the points A and B as shown is (a) R 0 (b) 0 2 (c) 0 3 (d) 0 4. Uploaded by: CoachScorpion4003
- The two 68K resistors in parallel (34K) are in series with the guitar and the grid. Since the impedance into the grid is infinite, no current flows through those resistors and the signal seen by the grid is exactly the same as the top end of the 1M resistor. That is, 100% of the guitar signal is applied to the grid
- The resistors mark R share the same value and set the idle current limit of the triodes, as these will see a voltage drop equal to transistor's emitter-to-base voltage, between 0.6V to 0.7V. Resistor Rk sets the desired cathode-to-plate voltage for the bottom triode by altering the idle current flow through the companion transistor
- d's eye, an infinite grid is one in which when a generator is synchronized to a grid it has a negligible impact on grid frequency--because there are so many other generators and their prime movers synchronized to the grid that the inco
- There are different types of grid layouts which you can work with. Today I will show you infinity abundance grid. Here by abundance, I do not mean only money. This infinity abundance grid is about Abundance of money, Abundance of love, Abundance of peace, depending on the crystals you use

Interview question for Algorithmic Trader.There is an infinite grid of 2-D coordinate. Each integer coordinate pair [(x,y) where x and y are both integers] is either coloured blue or red. Prove that there exists a rectangle having all vertices of same color. There are relatively few causes of output tube bias problems. All of them involve the grid not being held at a negative enough voltage with respect to the cathode. In any amplifier: If the output tubes have just been replaced with new ones, infant mortality/early dying of the new tubes * There is not much interesting to say about the intermediate region; no special phenomena appear there*. There still remain, however, several subjects in electromagnetism that we want to take up. We want to discuss the question of relativity and the Maxwell equations—what happens when one looks at the Maxwell equations with respect to moving coordinate systems Mechanical Stress and Deformation of SMT Components During Temperature Cycling and PCB Bending APPLICATION NOTE Application Note www.vishay.com Vishay Beyschlag Revision: 15-Aug-13 2 Document Number: 28872 For technical questions, contact: melf@vishay.co

- According to Ohm's Law, if we plot a graph of the voltage across a
**resistor**vs. the current flowing through the**resistor**, we should obtain a straight line through the origin. The slope of this line is the resistance. When two or more**resistors**are connected in series, the equivalent resistance is given by = + +R R R R eq 1 2 3 + - ation resistor comes in. It's possible to create the appearance of an infinite line by matching the characteristic impedance of the transmission line at the ter
- es the resistances of resistors in either parallel or series, as well as the resistance of a conductor. Experiment with the voltage drop and Ohm's Law calculators, or explore hundreds of other calculators

The grid capacitor and grid-leak resistor are a single unit with the variable grid-leak resistor controlled by a small knob. Figure 2. The clip-in type grid resistor is fixed. There is no baseboard, are also furnished in an infinite variety of types,. 2 Resistors in Series: The resistors in the following diagram are in series. Since they are the same value (1000 ohms), the voltage drop across each resistor is the same. Each resistor drops half the supply voltage (6 volts). 3 Resistors in Series: If there were 3 equal value resistors, the voltage would be divided equally between them Finding the grid resistance when it is driven positively is not easy. Some old graphs of plate curves do show the grid-current plot line, which is not straight, but I have never seen such a graph for the 845 triode. But any way you slice it, there will be a sharp discontinuity between negative grid resistance and positive grid resistance

RESISTOR Grid to Ground - The grid input impedance is so high that even 1M0 will hold it at ground potential. Reduce the value if you wish to change the input impedance of the amplifier. RESISTOR Rk - Vg = -6volts w.r.t. the cathode of the valve, so in this circuit we will lift the cathode 6volts positive w.r.t. grid. Cathode current in a pentode = anode current + screen current, so back to. There is no cathode bias. The significant point is that the combination of the grid resistor, the input DC blocking capacitor, and the diode action between grid and cathode, function as a diode clamp which clamps the positive peaks of the audio input signal to approximately ground potential See, when you have pin 1 tied to pin 8, there isn't any handy mounting point for the input side of the grid resistor. So rather than leave that end of the resistor sticking up in the air unsupported, like some people do, Fender mounted the grid resistors in between the pin 5 terminals of each pair of tube sockets

There is an infinite number of colors to paint an object (even if the difference is indiscernible to our eye), an infinite number of tones we can hear, and an infinite number of smells we can smell. The common theme among all of these analog signals is their infinite possibilities So we have v equals i, some current, times some resistor. I can come up with a resistor value, a single resistor that would give me the same Ohm's Law. And that is gonna be called, let's draw it over here. Here's our battery. And I'm gonna say there's a resistor that I can draw here, R series, that's equivalent to the three resistors here

Assorted resistors (Radio Shack catalog # 271-312 is a 500-piece assortment) Rectifying diode and infinite resistance is indicated at the far left-hand side. There should also be a small adjustment knob or wheel on the analog multimeter to calibrate it for zero ohms of resistance Any low value can be used as for V safe but if we put zero there, then it will take infinite time to discharge. So, it's a hit and trial method. Put the safe voltage and the time with which you want to discharge the capacitor and you'll get the value of bleeder resistor If unlimited, this current pulse can disturb the grid to filament alignment in the amplifier-tube[s] which can cause fatal, grid to filament shorts. A ceramic 10 ohm, 7W to 10W wirewound resistor would provide even better protection

KT90 PARALLEL PUSH-PULL AMPLIFIER. 1Feb2018 This is a different configuration of the 70W PPP amp built earlier. The basic audio design will be basically the same, but there is only one choice of feedback: 12dB. It will also incorporate an Arduino microcontroller as in Ben's Unnecessarily Complicated UC6550 amplifier Here the resistors R2 and R3 are in series combination. Hence applying the rule of resistors in series combination the equivalent resistance of R2 and R3 is given as. R A = R2 + R3. Here RA is the equivalent resistance of R2 and R3. Now the resistors R2 and R3 can be replaced by a single resistor RA. The resulting circuit is shown below Power = Volt x Amps = (Battery bank voltage) x (amps through resistor) = (29 volts) x (10 amps) = 290 Watts Therefore, 290 Watts will flow through one of our WindyNation 24 volt dump load resistors. Important: At this stage, you need to make certain the dump load you are using is rated to handle 290 Watts at continuous duty or there could be a very dangerous fire hazard of the transfer function of a resistor-capacitor network in general. The one other possibility of taking the output from the networkof Fig. 2 is indicated byoutputbacross ter-minals 1'-2'. Assume that outputb is connected to an infinite load such as the grid of a vacuum tube. The common lead 1' may be grounded. This type of con Grid Power is an energy system added by Extra Utilities 2. In addition to, or instead of Redstone Flux, some Extra Utilities 2 items require Grid Power. Unlike other energy systems, Grid Power is player-specific, wireless, range-less and cannot be stored. Any generators placed will be linked to the player that placed them and contribute to that player's Grid Power pool. Grid Power can be.

If there is only one switch closed on top and one closed on the bottom, then there is a single path through the circuit, and by Ohm's Law, the current will be equal to 5V divided by the total resistance through the current path. If there are multiple current paths, you may have resistors in parallel. Next: Capacitor. Previous: Ohm's Law. Inde The module is apparently from an IBM 705, a powerful business computer introduced in 1954. 1 The 705 was a big computer, weighing 16 tons. It contained 1700 vacuum tubes and consumed 70 kilowatts of power, with 40 tons 2 of air conditioning to take away the heat from the tubes. A typical system cost $1,640,000 ($15 million in 2017 dollars), but was normally rented monthly for $33,500 ($300,000.

Hence this circuit is called the infinite impedance detector. It will be noticed that there is no resistance or impedance in the plate circuit of the tube. In this case, the resistance in the cathode serves a dual purpose by supplying the necessary grid bias voltage and acting as a load in the plate circuit There is no signal applied to the right hand grid. Instead it is grounded through a 6.8 meg ohm resistor in parallel with a 0.005 uf capacitor. The meter movement requires 400 micro amps for full scale deflection Fortunately, there are no amplifiers with an output impedance of 4-ohm or 8-ohm which have to fit to speakers with these values. We have no impedance matching (power matching), we use impedance bridging (voltage bridging), whereby the power amplifier often has an output impedance of only one hundredth of the speaker's input impedance C) There is no induced current through the resistor. 12) In the figure, a copper bar is in contact with a pair of parallel metal rails and is in motion with velocity ν. A uniform magnetic field is present pointing downward, as shown. The bar, the rails, and the resistor R are all in the same plane. The induced current through the resistor R i There was also a 19 rack version, the EL6405. The primary impedance of the output transformers would be something like 3.4kOhms for the push-pull variant. You can use these with a pair of EL34's in pentode, or indeed try four in push-pull parallel triode strapped. There was also a variant with 4 x EL36 push-pull parallel with Ra-a of c. 1.5kohms