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Low-cost function generator

Based on a Labs project | October 2011 | Find it here
Low-cost function generator
Here’s a function generator that won’t break the bank yet offers perfectly acceptable output waveforms for many applications in your workshop. The generator supplies sinewave, rectangle and triangle waveforms within the frequency range 1 kHz to about 15 kHz. The output level is adjustable between 0 and about 10 Vpp. Though frugal, these specifications make the generator a useful piece of test equipment for audio design, experimentation and repair purposes. Since only common-or-garden components are used, the generator can be built at a modest outlay.
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