Hi,
using an ATmega8 I can generate a PWM (8-10 Bit) and run in at approx
4KHz. This part works perfektly, but the problem is the connected l293d from Texas Instruments.The input voltage to the l293d is 12V but using the above PWM I don't get the whole range of 12V, but only 5-11V. I would like to get the output voltage in the whole range of 0-12V proportionally to the PWM (actually the DC in my application needs mainly a voltage in the range of
1-4V but sometimes also > 5V are needed, so I cannot use the PWM signal directly)do you have any suggestions what could be wrong in the above configuration? Did someone succeed to get a voltage in the whole range of 0-12V using the l293d (or some other IC) (maybe even using an ATmega8 and can provide his PWM settings for status registers involving the output at OCR1A/OCR1B or OCR2)?
Artur
_______________________________________________________________________________ Artur Merke ||| snipped-for-privacy@udo.edu (O-O) _____________________________________________.oo0--(_)--0oo.___________________