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Handy Dandy Little Circuits #18-2

Now you need one of the following tone generator module:

To use the option with the blinking LED you must reduce the frequency of the oscillator below 60hz by changing R or C or both.

Warning =     Before using the medium power output option make sure your power source can supply the necessary current without depleting the voltage for the overall circuitry.

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© Laurier Gendron, Burnaby, B.C., Canada. 1998