i need a square wave oscilator with output voltage of 0 to 12V
50% duty cycle and an easy ay to change the freq , what is the easiest and cheapest way to do that ?
50% duty cycle and an easy ay to change the freq , what is the easiest and cheapest way to do that ?
sss said:
No, just checked the Fairchild datasheet and it can give you
12.5 V @ 200mA and 13.5 V @100 mA, asssuming 15V supply,
of course.
Lucky for you I suffer from insomnia. 🙂
IMHO I found that the 555 a bit fiddley for keeping the duty cycle constant
I would be tempted to run the 555 at twice the frequency and use a flip flop cct behind the 555 to divide by two and keep the duty a constant 50 pct
I would be tempted to run the 555 at twice the frequency and use a flip flop cct behind the 555 to divide by two and keep the duty a constant 50 pct
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