Crystal Tester
(Summer Circuits 2010 article)
Published in issue 403, July/August 2010
This crystal tester is very straightforward. Fitting a crystal or switching on the supply voltage generates a ‘start pulse’ resulting from the fact that the crystal briefly pulls the voltage on the base of T1 low. This directly affects the operating point of the transistor via feedback capacitor C1, with the result that the transistor starts oscillating.
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Click below to download a PDF copy of this article from Elektor magazine. Please note. In view of the complexity of international markets, Elektor cannot guarantee the availability of components for this project.
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