What is this R doing at the fb loop?
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I know it may be fairly simple, but i'm having some trouble figuring it out ... why is R23 there?
I guess it's a compression thing, but not for sure.
It's the schematic of a SS Fender Amp ... nice cleans but awful (really, disgusting) distortion channel.
Thanks!!!
https://www.dropbox.com/s/s5xzfbsclir1p ... r.jpg?dl=0
I guess it's a compression thing, but not for sure.
It's the schematic of a SS Fender Amp ... nice cleans but awful (really, disgusting) distortion channel.
Thanks!!!
https://www.dropbox.com/s/s5xzfbsclir1p ... r.jpg?dl=0
- Manfred
- Tube Twister
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Compared to a common diode, an LED has a significantly higher junction capacitance.
So my guess is that this junction capacitance in series with the 220k resistor will reduce the gain at higher frequencies as long as the LED and diode voltages remain below their threshold voltage.
If I am right, this would be a very tricky circuit design.
So my guess is that this junction capacitance in series with the 220k resistor will reduce the gain at higher frequencies as long as the LED and diode voltages remain below their threshold voltage.
If I am right, this would be a very tricky circuit design.
- Manfred
- Tube Twister
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- Posts: 1937
- Joined: 04 Apr 2009, 23:42
- Has thanked: 1671 times
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In this essay a diagram is shown with the curve of the capacity as a function of the voltage across the LED:
https://www.edn.com/an-leds-intrinsic-c ... c-circuit/
https://www.edn.com/an-leds-intrinsic-c ... c-circuit/