using LPT port to control electronic devices
date: 09.07.2002


Connecting devices to PCs LPT port

lpt_leds.gif (3947 bytes)
LEDs with 470 ohm resistors.

Connecting relay:

Don't forget to connect protective diod to relay coil.

Isolated:

lpt_isol.gif (2367 bytes)

Connecting triac to LPT port for controlling power devices:





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