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AoE photodiode boostrap
nihial:
In the AoE in the photodiode section there's a circuit where a photodiode is bootstrapped by a jfet. It is mention in the text that there is a emitter follower not shown for simplicity but I don't understand where you put it. I'm trying to upgrade a frontend of a photodiode stage I'd like to test the circuit with that mentioned emitter follower especially if it improves the overall circuit.
Thanks in advance !
PartialDischarge:
Turn to the next page and there you have your emitter follower in 8.83!
David Hess:
Adding an emitter follower in series with the source of an FET is done because the transconductance of the FET is so much lower.
nihial:
--- Quote from: MasterTech on July 29, 2020, 05:39:55 pm ---Turn to the next page and there you have your emitter follower in 8.83!
--- End quote ---
Oh my god I feel so dumb to not have seen it
nihial:
--- Quote from: David Hess on July 30, 2020, 02:23:05 am ---Adding an emitter follower in series with the source of an FET is done because the transconductance of the FET is so much lower.
--- End quote ---
Thank you for the explanation
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