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Square Wave to Triangular Wave Conversion

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gelo

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Hello Guys,

I need your help with my present project..
Other than Integrator topology(R-C LPF)

Who can suggest a schematic that can convert a 76khz square wave to a triangular wave.

Thanks in advance for your help
 

Some kind of integration will always be needed.

If you cannot use an RC integrator, use a DAC and a up/down counter.

As your input signal is high, count upwards high frequency pulses. When the input signal is low, count downwards. The output of the counter is supplied to a DAC. A low-pass filter smoothes the DAC output.

Another way could be controlling a courrent source sink which feeds a capacitor. When the input signal is high you charge a capacitor with a constant current. In the other case you discharge the capacitor.

In both cases a triangular wave is generated.
 

I had already figured it out yesterday using a charge discharge circuit,
Anyway thanks again
 

Yes, just like a RC oscillator, charge the cap and discharge the cap will give you triangular wave output
 

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