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Help : PWM generation

Hirak

Oct 17, 2020
2
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Oct 17, 2020
Messages
2
Hi ,
I want to generate voltage control PWM signal(0-5V) duty cycle vary from 10% to 90% and at the same time i want to change frequency with changing voltage whenever is required.
please help me to design that.

Thanking you,
Pratik
 

Alec_t

Jul 7, 2015
3,587
Joined
Jul 7, 2015
Messages
3,587
Welcome to EP!
This circuit may meet your needs. Duty cycle is voltage-controlled but the frequency is controlled with a variable resistor.
VariableFreqAndDuty.png
 

Hirak

Oct 17, 2020
2
Joined
Oct 17, 2020
Messages
2
hi,
i am using the circuit in HV application. can i used that circuit?
 

Bluejets

Oct 5, 2014
6,901
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Oct 5, 2014
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6,901
hi,
i am using the circuit in HV application. can i used that circuit?

The IC inverter used is around 5v (6V max) so that's pretty much the limit.
No idea what you mean "use in a hv circuit".
Possible to interface with an opto of some description.

Best show the circuit.
 
Last edited:

Alec_t

Jul 7, 2015
3,587
Joined
Jul 7, 2015
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3,587
Agreed. Post your intended HV circuit, including voltage, frequency and current particulars.
 
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