Armstrong sinewave oscillator. Also known as Meeissner oscillator

396

08:48:32

Originally designed with triode vacuum tubes by Edwin Armstrong in 1912. 
A  JFET can be a direct replacement of a triode valve in some instances.

Without capacitor in circuit is more like a Joule thief, with the capacitor. is a low freq sine wave oscillator. Use the switch to see the difference.

published 9 years ago

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