Circuit diagram
This is a simple XTal tester circuit. T1 and XTal have formed an
oscillator. C1 and C2 are voltage divider for oscillator. if the XTal is
safe, the oscillator will work well and its output voltage will be
rectified by C3, C4, D1 and D2, then T2 will run and LED will light. The
circuit is suitable to test 100KHz - 30MHz Xtal.
Author: 303 circuits, Elektor Electronics
Source: http://www.electronics-lab.com
Source: http://www.electronics-lab.com
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