On this page, I will introduce the Light
controller with PIC16F873.This
circuit is usable only in the direct electric current.It isn't possible to use for alternating
current.In this circuit, the following
features of PIC16F873 are used.
 A/D converter |
The voltage controlled by the variable resistor
(Analog) is converted to the digital signal.
This signal is used to control the pulse duration (the duty)
of PWM. |
| Compare |
A/D converting is executed
every 1-millisecond period using this
function. |
| PWM |
The electric current which flows through the lamp
is controlled by the PWM pulse signal.
In
this circuit, the pulse of about 610 Hz is
used. |
|
Hardware
