[SOLVED] Relay operate Using Parallel Port of CPU

[nick703]

hello friends i want to operate Relay using parallel port of CPU .

I have a Leone DC12 V Relay , one 1N4007 Diode , one BC547 transistor and 470 ohm Resistor . so is that possible to operate relay using Parallel port . and i have also Lalim Parallel Port EXE . so any circuit is diagram may my help !!!

 

[nagkiller]

This is a nice portuguese parallel port tutorial
**broken link removed**

Search for Circuito-3

Use google to translate!!!

Or google + parallel port relay circuit

Isolated circuit:

 

[nick703]

thanks nagkiller . now i want to know is that possible to power up relay 12v take in the CPU parallel port or any other device of CPU becuse no more power supply like S.M.P.S .

 

[nagkiller]

Parallel port dont have power... you need external power, like above image!!!

 

[nick703]

ok Problem Solved I used Hard Disk Power Of 12 v and 5 v .