bipolar circuit
How are crystal oscillators used?
I mean specifically…I know they’re piezoelectric etc. etc. but how are they used in a circuit to produce an oscillating output that can, say, trigger the base of a bipolar NPN?
there are many methods.
colpitts oscillator is one.
http://www.geocities.com/raiu_harrison/mwa/tech/circuits/osc-xtal.html
http://my.integritynet.com.au/purdic/crystal-oscillators.htm
this link has a lot of info:
http://hem.passagen.se/communication/txo.html
When you need a lower frequency, you run a higher frequency crystal and use counter chips to divide the frequency down to where you want it.
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Sequential Circuit, Generator 170volts AC
