Can crystal oscillator be used to turn power on and off at the frequency of the oscillator.?

Question

I am trying to switch 12VDC form on and off at the frequency of the oscillator. Can I use crystal oscillator to do this when an oscillator is connected to an external 12VDC.

Answer 1

There are devices that do switching. Depending on the frequency there are solid-state relays that will take the osc. input and switch an other circuit, and osc and power source remain isolated. If the circuits can share a common ground, there are many solutions: SCR, transistor, FET.

Answer 2

You can make a simple circuit involving an amplifier and a FET.
First set up the amplifier to boost crystal output to a few volts ((or enough to turn on the FET)). Make sure the threshold voltage is the center of the AC swing so that you preserve the waveform. Connect the Source and Drain to the positive and negative of the battery ((Buffering Accordingly so not to blow the FET, which you shouldn't need to worry about)). For a schematic, e-mail me. I have used this circuit in my own work before.

Answer 3

Use an op amp, to boost the oscillator voltage to approx. 5 volts.

Use a MTP3055L (Logic controlled FET) to switch the 12 VDC on and off, with the gate connected to the output of the Op Amp above.

This will only work up to a certain frequency.

Answer 4

A crystal oscillator would include the electronics to generate an AC signal, but typically would not include a power stage. It could drive a simple, easily added power stage such as a switching transistor.