Posts tagged ‘HP 6181C’

Powering Up an HP YIG Tuned Oscillator

I was going through some of the components I accumulated over the years and stumbled upon a Hewlett Packard YIG tuned oscillator (part number 5086-7023) that I bought a while back. This YIG oscillator was made for a frequency extension module for the HP 8660C synthesized signal generator and has a tunable range of between 2.7 to 4.2 GHz.

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HP 6181C DC Current Source Teardown

HP 6181C is a lab grade 0 to 250 mA current source manufactured back in the late 70’s and early 80’s. There does not seem to be any pictures on the Internet for this particular model so I thought I would do a teardown here. Continue reading ‘HP 6181C DC Current Source Teardown’ »