I
[email protected]
- Jan 1, 1970
- 0
please forgive the supidity of this question but I am a mechanical
engineer and have very linited knowledge of electronics.
I have tried to biuld a 12 volt power supply for testing
motor/gearbox/pump units and the problem is that it keep blowing up
I have only a very simple circuit of a Transformer to drop the voltatge
down from 240 then feed this through a bridge rectifier ( International
Rectifier Part No. GBPC3502A ) and the connect the output via an
ammeter to the motor. once it is running it is fine, but somtimes blows
the refitier when it is turned on ( switching the AC input to the
transformer ) do I need more components in the circuit, if so what ?
The motors will draw up to 20 amps, when running the rectifier does get
hot but has a heat sink and fan from an old PC connected. but it
allways blows when you turn it on, not when it is running
All assistance greatfully received
Phil
engineer and have very linited knowledge of electronics.
I have tried to biuld a 12 volt power supply for testing
motor/gearbox/pump units and the problem is that it keep blowing up
I have only a very simple circuit of a Transformer to drop the voltatge
down from 240 then feed this through a bridge rectifier ( International
Rectifier Part No. GBPC3502A ) and the connect the output via an
ammeter to the motor. once it is running it is fine, but somtimes blows
the refitier when it is turned on ( switching the AC input to the
transformer ) do I need more components in the circuit, if so what ?
The motors will draw up to 20 amps, when running the rectifier does get
hot but has a heat sink and fan from an old PC connected. but it
allways blows when you turn it on, not when it is running
All assistance greatfully received
Phil