Light illuminated control circuit


Posted on Mar 28, 2007

220V AC after capacitive G buck regulator VS regulator, rectifier diode VD, capacitor filter to G IC (NE555) provides approximately 3.3V DC operating voltage. lC Schmitt trigger connected as light control. Night room inside light, the photosensitive resistor


Light illuminated control circuit
Click here to download the full size of the above Circuit.

Rc great resistance. The IC and foot potential is lower than Vm / 3 (Vm to 3.3V supply voltage), IC set, pin output high. Light-emitting diodes LED1-LED4 light, due to the LED1 ~ LED4 are fixed at 12 oclock, 3 oclock quartz clock, 6:00, 9:00 at four points, and therefore can play a quartz clock to the role luminous lighting. Natural light during the day or evening before the house lights to go to bed not make RG resistance is small, to the potential of pin and 1C higher than 2V / 3, lC complex position, pin is low, LED1 ~ LED4 in lights state to conserve power.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

economy radar detector
lamp flasher using ic lm395
build good audio buffer
Electronic Die
SP6336 SP6336 -Triple Micropower Supervisory Circuit With Watchdog And Power Fail
reading electricity meter ir impulses
Apply a Pulse to a Speaker Using a Capacitor
Car anti-theft alarm circuit



Top