s to r

[Mike I.]

Here's a circuit that might do what is required - redrawn from Elektor 
magazine, June 1978. The article indicates that if the input square is 
gated on/off, the output sawtooth will not have a rectangular envelope 
(it will  have a  pseudo-ADSR envelope) - but for a continuous constant 
amplitude square wave input the circuit outputs a continuous constant 
amplitude sawtooth, over a 10 Hz to 20 Khz range (disclaimer - I haven't 
tried this circuit). MI
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