spikey1973
- Jul 16, 2014
- 32
- Joined
- Jul 16, 2014
- Messages
- 32
Hello,
hopefully a question with a simple answer., and sorry i have to use words only.
i have a PSU which supplies a 100kHz switched DC current, 2x 16V with 10A .
1) goes to a microPSU for a PC mainboard.
2) goes to a 20cm PC fan (yeah a large one) which speed is regulated by an arduino board.
now the issue that rose up is that when the fan idles it will function as a AC power generator.. and i really don't want this component to be influencing the DC on the PC mainboard circuit.
so my idea was to place a diode (1N4007) in the circuit so the DC can power the fan, but the AC from the fan can't reach the DC.
some one said that using just one diode in the plus lead would be just fine, but i prefer a second one in the - lead, ofcourse with reversed polarity compared to the + lead diode.
would there be a disadvantage in doing so? and if yes, in what way?
thanks for your help in advance.
Kind regards
Matthieu
hopefully a question with a simple answer., and sorry i have to use words only.
i have a PSU which supplies a 100kHz switched DC current, 2x 16V with 10A .
1) goes to a microPSU for a PC mainboard.
2) goes to a 20cm PC fan (yeah a large one) which speed is regulated by an arduino board.
now the issue that rose up is that when the fan idles it will function as a AC power generator.. and i really don't want this component to be influencing the DC on the PC mainboard circuit.
so my idea was to place a diode (1N4007) in the circuit so the DC can power the fan, but the AC from the fan can't reach the DC.
some one said that using just one diode in the plus lead would be just fine, but i prefer a second one in the - lead, ofcourse with reversed polarity compared to the + lead diode.
would there be a disadvantage in doing so? and if yes, in what way?
thanks for your help in advance.
Kind regards
Matthieu