KimLaroux
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Great information right here. Thanks.
In my build, I have each MOSFET decoupled with a 330 µf capacitor. I'm thinking about adding a low value resistor before them, to create a CRC network at each FET. Would that be a sensible solution?
I just crunched some numbers real quick. I think a 20 R resistor would be good enough. It should drop 3 V and dissipate a little under half a watt. I don't know though how to calculate how many dB such a filter would attenuate. I'm also concerned 330 µf per FET may be too low. I have a 4700 µf cap on the output of the power supply, and isolating the output MOSFET from it just seems like a silly idea.
Now that I know how the source follower works, I feel safe about removing 3 V from the MOSFET Drain. It should not hurt it's operation.
Another solution would be to replace this 4700 cap with two 2200 and place a resistor between them. Since I can adjust my power supply up to 65 V by changing a single resistor, I can compensate for the drop across the resistor. Or just wait and do it when I modify my circuit to use this 65 V... Though something tells me that using a resistor to isolate the MOSFET from the power rail at the other end of the amplifier may actually provide better isolation against noise induced on the rail as it crosses the amplifier.
In my build, I have each MOSFET decoupled with a 330 µf capacitor. I'm thinking about adding a low value resistor before them, to create a CRC network at each FET. Would that be a sensible solution?
I just crunched some numbers real quick. I think a 20 R resistor would be good enough. It should drop 3 V and dissipate a little under half a watt. I don't know though how to calculate how many dB such a filter would attenuate. I'm also concerned 330 µf per FET may be too low. I have a 4700 µf cap on the output of the power supply, and isolating the output MOSFET from it just seems like a silly idea.
Now that I know how the source follower works, I feel safe about removing 3 V from the MOSFET Drain. It should not hurt it's operation.
Another solution would be to replace this 4700 cap with two 2200 and place a resistor between them. Since I can adjust my power supply up to 65 V by changing a single resistor, I can compensate for the drop across the resistor. Or just wait and do it when I modify my circuit to use this 65 V... Though something tells me that using a resistor to isolate the MOSFET from the power rail at the other end of the amplifier may actually provide better isolation against noise induced on the rail as it crosses the amplifier.