The Cranky Sysadmin A world of technology, fun, and ignorant rants.

November 27, 2011

Colpitts Oscillator

Filed under: Electronics,ham radio — Cranky Sysadmin @ 5:41 pm

I built my first functional Colpitts oscillator today. I tried a Hartley oscillator, but I think my cheap transistors couldn’t switch fast enough for the small value of inductance I was using. My oscillator was based on the neat animations found at

I’m going to dig around in my pile of stuff for some faster switching transistors. In the meantime enjoy a poorly produced video:

It shows off my ancient bench supply and possibly more ancient Tektronics 465 o’scope.

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