HOW TO MAKE A SIMPLE PWM SIRCUIT

385

02:24:08

This is a 100% garanty credible PWM sircuit the higher Dutty Cycle input/the higher DC output if need higher the frequency/the lower right capacitor...This sircuit is maded to drive boost converter. The parts i used are two capasitor three resistor two PNP BC640 transistor and a CMOS IC 4049 HEX NOT BAFFER. I am working on to control pulse width automatically as i replace the adjustable resistor with LDR controled by LED from feedback voltage. JUST TRY YOU WIN.

published 1 year ago

HOGROUND

1 year ago

Also, 555 IC can do this

HOGROUND

1 year ago

But, I haven't thought this PWM Circuit, It looks cool

evecute

1 year ago

Did you have any schematic with IC555 pwm codroled from feedback voltage?

HOGROUND

1 year ago

https://everycircuit.com/circuit/5972174271807488

HOGROUND

1 year ago

Voltage Controlled PWM Version :

HOGROUND

1 year ago

https://everycircuit.com/circuit/6479517216538624

evecute

1 year ago

Thank you for your presentation, i do already make similar circuits with op amp everything look ok with simulator but in real sircuit nets...thinks are different.LOL.

HOGROUND

1 year ago

Me too, I have made negative voltage regulator with feedback. But, real opamp does not work well as simulator (slew rate, weak output current...etc, UA741 is too slow, LF356...hmm ok)

evecute

1 year ago

Op amp is not my priority...i use them mostly as comparators and voltage followers.

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