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DiscoverCircuits.com -- Hobby Corner
Last Updated on:
Tuesday, June 01, 2021 03:06 PM
Hobby Circuits List
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More
Triangle Wave Generators,
Signal Generators |
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Triangle Signal Generator |
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A Discover Circuits visitor needed
a variable low frequency triangle signal generator, which would produce a full 5
volts peak to peak signal using a 5v supply. I suggested the circuit below.
It uses three rail to rail op Amps (2 LMC6484 dual op Amp packages). The first
circuit produces a clean 2.5v reference voltage. The second is configured as a
classic multivibrator oscillator, whose frequency can be changed using a variable
resistor. |
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The
waveform generated across the oscillator timing capacitor is fairly linear and is
restricted to only 1 volt peak to peak. It swings a half volt above and below the
2.5v reference. The voltage across the capacitor is then Amplified by the third op
Amp by a factor of 5. The result is a pretty clean triangle signal, which
approaches to within a few tens of millivolts of the supply rails. |
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Click on Circuit Below to view PDF of Schematic |
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