[sdiy] Pulse 2-Ramp Oscillator

Gordonjcp gordonjcp at gjcp.net
Mon Jan 22 22:08:38 CET 2018


On Mon, Jan 22, 2018 at 03:57:30PM +0000, Rob Spencer wrote:
> 
> Does anyone know if such an analogue circuit exists already? I’m guessing it would be some sort of relaxation oscillator which charges a timing cap up to a voltage (amplitude), holds on for a delay, then discharges via a variable resistor.

You'd need a pair of current sources I reckon, one for the charge and
one for the discharge side.

Don't ask me how you'd control the slope *and* get the two to track
exactly ;-)

-- 
Gordonjcp




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