Week 11

POWER SUPPLY

• The main component is the regulator IC 7805 which serves to convert the input DC voltage 12V to 5VDC.
• 5VDC is the operating voltage used by the PIC, sensor, relay driver, and also in the other circuits
• Diode IN4007 functions as a rectifier
• Resistor 1K ohm function as "Load" which allows a small current through it and then light the LED.
• Capasitor functioa as a "Filter" to produce a clean DC operating voltage (filtering the resulting ripple voltage)