Power from PC parallel port

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msmax

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Any one has experience retreiving power from parallel port. I need it to power up minidisk title hardware from LPT.

All your advise is welcome.
 

Don't try do a such thing! A PC PP haven't got current handling capacity enough to drive a regular motor (seldom beyond 20mA/pin). You only could burn your PP. Nevertheless USB (and only USB as far as I know) is intended to give the power supply needed for regular (medium power) peripherals (ie a minidisc).

Cheers :wink:
 

Max power available at usb port is 500mA.
 

Well, first get the pin connection from a search engine, try: https://www.google.com/

2nd use a high current transistor( darlington ) to amplify the current, bcz pc's lpt are current limited by resistor.

good luck
 

Thanks for your reply.

I only need to drive an infrared LED for sending commands to my MD equipment.

Just made a cable to the PS/2 connector which has a reliable 5V source.
 

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