I am trying to build an analog voltage-controlled pulse width modulator.
I'm trying to get the first half working with the saw blade portion that is outlined by a red square but I cannot get that working. IC1 is also not outputting a square wave signal, so I believe my problem lies there. I have double checked my connections on my breadboard and they match up to the circuit.
Does anyone have any idea why this circuit does not work? My scope just sees a flatline VCC voltage value.
I'm modifying a circuit I found here:
http://pcbheaven.com/circuitpages/Triangle_Wave_Generator/
http://www.pcbheaven.com/circuitpages/Voltage_Controlled_PWM_Generator/
Thanks.
I'm trying to get the first half working with the saw blade portion that is outlined by a red square but I cannot get that working. IC1 is also not outputting a square wave signal, so I believe my problem lies there. I have double checked my connections on my breadboard and they match up to the circuit.
Does anyone have any idea why this circuit does not work? My scope just sees a flatline VCC voltage value.
I'm modifying a circuit I found here:
http://pcbheaven.com/circuitpages/Triangle_Wave_Generator/
http://www.pcbheaven.com/circuitpages/Voltage_Controlled_PWM_Generator/
Thanks.
Last edited: