Transistor

ksoni · ‎2024-03-07

what is the maximum operating frequency of BDX33 and BDX34 ??

Andrew Neil · ‎2024-03-07

What do their datasheets say?

(it will also depend on your circuit, and what you consider to be the limiting factor(s) on performance)

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.

AScha.3 · ‎2024-03-07

These (old) darlingtons are more for small audio amps, see :

From ds i would recommend to use it at max. 30kHz (sine) , over 30kHz gain falling.

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