EMRFD Message Archive 15001
Message Date From Subject 15001 2018-08-14 06:58:07 Ravi Miranda TIA Amplifier replacement transistors Hi
Having read the note here: http://w7zoi.net/bidirectional_matched_amplifier.pdf
Would it mean that I could replace the 2N3904 with say a 2N2222 or
maybe the S9018 or KSP10TA
any NPN Si?
Would the biasing need changes?
Many thanks for your time.
I'm here to add more value to the world than I'm using up.
15002 2018-08-14 10:56:33 kb1gmx Re: TIA Amplifier replacement transistors First why?And yes on the ksp10 depening on what your doing. Its likely bias mayhave to be adjusted.Allison 15003 2018-08-14 11:06:21 w7zoi Re: TIA Amplifier replacement transistors Hi Ravi,Yes, you can use about any small signal transistor with similar or higher bandwidth. Keep the biasing that is shown, for that establishes the behavior of the stages. You can't use just ANY NPN, but close.Good luck.Wes, w7zoi 15004 2018-08-14 11:35:35 Ravi Miranda Re: TIA Amplifier replacement transistors Hi AllisonI have come across a batch of them so thought I could put them to use?Just my thinking that the S9018 would be useful because of the higher fT but it may not be worth the troubleI had a batch of the KSP lying around, so thought I'd have a go with those.Many thanksRavi/M0RVI