#139 - Agilent 33250A function gen output amp replacement (not quite)

This is an attempt to come up with a replacement for Agilent hybrid output amplifier in 33250A function generator. The prototype almost works, but shows some sort of instability at the very limit at 80MHz and 10Vpp output.

Forum: https://www.eevblog.com/forum/repair/agilent-33250a-function-gen-output-amp-replacement/ ... https://www.youtube.com/watch?v=MVSbVt8pdcU