Reproducing the HP 8601A Output Hybrids (5086-7112, 5086-3012, 1820-0150)

I have succeeded in making reproduction HP 8601A output amplifier hybrids which match or exceed the performance of the original parts. For those curious about the process, read on! First a bit of background. The story really starts with another project, reproducing the HP 1820-0285 ICs for the 8007 series pulse generators (see my blog […]