Monday 13 February 2012

Opamp PWM Generator Circuit

Opamp PWM Generator Circuit


This uses the LM324, a 14-pin DIL IC containing four individual
op-amps and running off a single-rail power supply.
The sawtooth is generated with two of them (U1A and U1B),
configured as a Schmitt Trigger and Miller Integrator, and
a third (U1C) is used as a comparator to compare the sawtooth
with the reference voltage and switch the power transistor.

2 comments:

  1. It is not clear. one can't know the components value.Try to repost it.

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  2. It's perfectly clear, it's a *gif image. The background colour is making difficult to read.

    Save it to your computer and open with a problem such as XnView or Irfanview.

    Even your OS's stock image viewer should do.

    Try this: http://1.bp.blogspot.com/_ycHwJEosotY/SVXhqdjwkjI/AAAAAAAAAEk/IUWIjxO6bxg/s320/324pwm_c.gif

    Or this:
    http://pixlr.com/editor/?exit=http://imgops.com&image=http%3A%2F%2F1%2Ebp%2Eblogspot%2Ecom%2F_ycHwJEosotY%2FSVXhqdjwkjI%2FAAAAAAAAAEk%2FIUWIjxO6bxg%2Fs320%2F324pwm_c%2Egif

    ReplyDelete