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For information about PIC Microcontrollers: MICROCHIP.COM
Content of this website until 5/2012: web-content-5/2012
-drive white or blue LED at 1.2 volts, no resistor required, current limited by design.
-power small microcontroller circuit at 1.2 volts, no further regulation required, max. voltage not exceeding 3.5 volts.
-replace 9v battery (2.4 volts)
-provide small currents at 12 volts (2.4 volts).
-drive 6v bubble LEDs from 5 volts (good brightness).
-drive 12 volts fans from 5 volts, including speed regulation, and to provide more than 12 volts. The BC327 can handle upto 800mA in fact the current will be limited due to coil saturation. 12 volts/90 mA fan can be used at 5 volts, where it normally has difficulties to start up at all.
The max. output current will increase with input voltage. At voltages higher than 2.4 volts the circuit should not be used without load, since the output voltage is not limited at all. Microcontroller circuits used at 2.4 volts input should have their own storage capacitor.
-drive 12v eletromechanic relay using 5 volts. This works very relieable.