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ECE4448 L34: Treble Response of Plate Bypass Capacitors (as in Fractal) (Guitar Amp & Effects) 

Lantertronics - Aaron Lanterman
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Support this channel via a special purpose donation to the Georgia Tech Foundation (GTF210000920), earmarked for my work: • Support This Channel v...
Here is the class playlist: • Guitar Amplification &...
0:00 -- Introduction
1:27 -- Common cathode amplifier
2:47 -- Parallel resistors
3:13 -- OCTC method
4:24 -- Small-signal circuit
5:28 -- Transfer function form
7:02 -- Time constant computation
7:51 -- Mesa Boogie Dual Rectifier
9:19 -- Small-signal parameters
11:01 -- Cutoff frequency
11:54 -- Nonlinear dynamic models
12:55 -- Fractal Audio conjecture

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23 июл 2024

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Комментарии : 7   
@bradfinamore2396
@bradfinamore2396 2 года назад
I just encountered this scenario in a 6g6b bassman build I'm doing and posed a question to a FB group. Someone cited this lesson. I'm really glad 😊
@Lantertronics
@Lantertronics 2 года назад
Happy it helped!
@LeonTodd
@LeonTodd 2 года назад
An expert on amplifiers diving into expert amp modelling - this is going to be a treat!
@LeonTodd
@LeonTodd 2 года назад
08:47 - using "sizzly fizzly" as often as I can now 14:07 - Recto 1 is a model of an older 2 channel Rectifier, Recto 2 is a model of the newer 3 channel version.
@Lantertronics
@Lantertronics 2 года назад
Hope you enjoy it!
@possible-realities
@possible-realities 2 года назад
12:10 Of course there's some nonlinearity, but as you say, the output impedance of the stage is completely dominated by R_ACL (in parallel with a much higher impedance that doesn't matter much), so that should mean that the time constant stays very close to C_P*R_ACL too, right? So I would expect the model with nonlinear amplification followed by first order lowpass filter to be a very good model.
@possible-realities
@possible-realities 2 года назад
7:51 So the time constant comes from the plate bypass capacitor leaking through the output impedance of the amplifier, right? (Just as the schematic shows.)
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