Triangle wave generation for PWM
Triangle wave generation for PWM
(OP)
Is there an easy way to generate a triangle wave for use as a PWM clock using only an oscillator and a few components? I currently am using a astable vibrator circuit (with an opamp) and would like to improve the frequency accuracy.
Thanks
Thanks





RE: Triangle wave generation for PWM
charging C & open coll. or FET discharges it.
2.) Phase lock present circuit to xtal.
More ? Send specs. nbucska@pcperipherals.com
RE: Triangle wave generation for PWM
have two inverters in series, with a resistor from the end to beginning ; from the end, through another resistor, in a third inverter wich has a capacitor in parallel; a third resistor should be placed from one end to another of the hole scheme. You can collect the triangle wave from the end of the third inverter .
If I told you something you already knew, sorry, but that's the first thing(and easier, I say) that came in my mind.
If you think it's too complicated, what can I say, try finding some of them specialized IC's(I'm sorry, I'm don't have an appropiate catalogue).
PS: please excuse my bad english or my(eventually) poor thinking documentation. Hope to be a help...
glorgl
RE: Triangle wave generation for PWM
va(t)=Integral from nT to (n+1)T/2 of A ~ At
vb(t)=Ingegral from (n+1)T/2 to (n+1)T of (-A) ~ -At
with appropriate integration time shift adjustments for n=0, 1, 2, ...
RE: Triangle wave generation for PWM
RE: Triangle wave generation for PWM