Can't be the latter, so it must be because the frequency is too high. Do you have an oscilloscope or a high end logic probe (e.g. HP545A)?Is it due to frequency of timer 555 or because I am using 12v for both n-channel mosfet and timer 555?
How are we supposed to help you if you don't give us the required information? We were all making assumptions about the setting on the "22k" pot, but you were using 50k.I used 50k pot also for testing. moved it to from 0 to full. led still on.
Frequency is independent of supply voltage.do I need to reduce voltage of the logic?
no, sorry. I mean, I used 22k first, result was the same. then I used 50k pot for testing but the result turn out to be same.How are we supposed to help you if you don't give us the required information? We were all making assumptions about the setting on the "22k" pot, but you were using 50k.
It should be pretty obvious why essentially removing the timer from the circuit would turn the LED off.I think it is related to frequency only because when I removed connection from pin 3 of timer 555, the led turned off
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by Jake Hertz
by Jake Hertz
by Luke James