hi guys
trying to build a vco with op amps that operates 0- 5khz with input voltage range from 0-6 volts and ramp voltage of + to - 4 v , would appreciate some guidance on where i am going wrong ! i have attached the schematic below , im un sure whether the op is correct for the job i have changed with limited success !! , im upon the understanding the zeners on the bottom of a2 control the voltage and the capacitor controls the frequency which is above a1 , and
A1= summing amplifier
A2= voltage comparator
A3= inverting summing amplifier
i hope some one can lend a hand
cheers !!
trying to build a vco with op amps that operates 0- 5khz with input voltage range from 0-6 volts and ramp voltage of + to - 4 v , would appreciate some guidance on where i am going wrong ! i have attached the schematic below , im un sure whether the op is correct for the job i have changed with limited success !! , im upon the understanding the zeners on the bottom of a2 control the voltage and the capacitor controls the frequency which is above a1 , and
A1= summing amplifier
A2= voltage comparator
A3= inverting summing amplifier
i hope some one can lend a hand
cheers !!
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