hello,
I am at the moment trying to make a boost converter to charge a capacitor bank.
I am using this circuit diagram **broken link removed**
not shown in the circuit is that the GND pin of the lm311 is meant to be conected to 0v.
and it charges fine.
the problem is though, when its reaches a certain voltage, it should switch off, but it doesnt.
What is meant to happen is that the LED should illuminate when the target voltage is reached. also the 555 should turn off.
I am not really sure if this is happening,
the led slowly gets brighter, and remains dim. if i disconnect power then reconnect power, it turns bright, and there is no more audible noise.
however the mosfet then gets super hot, and wether or not i disconect the capacitor, it begins to discharge very quickly which it shouldnt.
If anyone knows how i can prevent this, it would be greatly apreciated.
An alternative though would be if anyone knows how i can attach a 100v digital voltmeter to the capacitor bank to read the voltage, so when it reaches 330v or therabouts, it will display 100v on the voltmeter, like a percentage completed or something.
If anyone knows how i could do this without blowing up the voltmeter, or causing the capacitor to discharge, thated be great.
I am at the moment trying to make a boost converter to charge a capacitor bank.
I am using this circuit diagram **broken link removed**
not shown in the circuit is that the GND pin of the lm311 is meant to be conected to 0v.
and it charges fine.
the problem is though, when its reaches a certain voltage, it should switch off, but it doesnt.
What is meant to happen is that the LED should illuminate when the target voltage is reached. also the 555 should turn off.
I am not really sure if this is happening,
the led slowly gets brighter, and remains dim. if i disconnect power then reconnect power, it turns bright, and there is no more audible noise.
however the mosfet then gets super hot, and wether or not i disconect the capacitor, it begins to discharge very quickly which it shouldnt.
If anyone knows how i can prevent this, it would be greatly apreciated.
An alternative though would be if anyone knows how i can attach a 100v digital voltmeter to the capacitor bank to read the voltage, so when it reaches 330v or therabouts, it will display 100v on the voltmeter, like a percentage completed or something.
If anyone knows how i could do this without blowing up the voltmeter, or causing the capacitor to discharge, thated be great.