Electronics > Projects, Designs, and Technical Stuff

AoE photodiode boostrap

(1/2) > >>

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

Navigation

[0] Message Index

[#] Next page

There was an error while thanking
Thanking...
Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod