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What Is A Crystal? And How To Test It
Crystal are use to keep the frequency of the clock from drifting. If the signal from this clock stops, or is weak, or the pulses begin to vary, the electronic equipments might show intermittent faults or might stop altogether. The microprocessor pins that hold the crystal are usually called OSC IN and OSC OUT as shown in Figure 1 and the frequency is marked on the crystal. Typical examples of crystal oscillator frequency are 3.58MHZ, 4MHZ, 8MHZ, 24MHZ etc. Testing Crystal (a) Using Oscilloscope (b) Frequency Counter (c) Crystal Checker Jestine Yong is a electronic repairer and writer. For more information about electronic repair please visit his website at http://www.noahtec.com
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