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Original Message
RE: TubeCad Error re: LTP?
Posted by cpotl on June 11, 2021 at 02:56:46:
I agree with you.
If the plate currents are I1 and I2, then I1 + I2 = I0, with I0 being the constant current through the CCS. So with equal plate resistors R, this means I1 R + I2 R = I0 R, and so (V0 - V1) + (V0 - V2) = I0 R where V0 is the V+ voltage, meaning the plate voltages V1 and V2 obey
V1 + V2 = 2 V0 - I0 R = constant
So if V1 increases, V2 must decrease by exactly the same amount, and vice versa.
An unusual mistake by TubeCad! Does he elaborate on why he says what he does? Do you have a link to his article?