Automatic lighting switch circuit


Posted on Mar 28, 2007

NE555 time base circuit with AC solid state relay SSR may constitute automatic light switch circuit, the circuit shown in FIG. From the figure can be seen during the day due to incandescent EL photosensitive resistor circuit automatically fall off when the


Automatic lighting switch circuit
Click here to download the full size of the above Circuit.

night. EL turn on automatically. in graph. RG photosensitive resistance 2CU2B. When RG by light, resistance becomes smaller, when added to the base circuit NE555, pin voltage is higher, so the output of NE555 is low, the AC solid state relay SSR deadline, according to the AU does not light. When night falls, RG resistance increases, NE555 of, voltage is below 5v. @ The output pin goes high, the AC solid state relay SSR device of O feet to obtain a positive power source is turned on, it controlled AC output terminal, turned on. EL incandescent lighting, adjustment potentiometer RP, can change the lighting to the light switch time.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Proportional-temperature-controller
10 w amplifier using tda2003
VU LED Indicator Schematic
photoresistors servo and arduino
U-110 1.5 Mhz Current Mode Ic Controlled 50-watt Power Supply
The counter
Automatic conversion l0 wind speed controller C192 555 CD4028
Isolated two-wire current loop circuit diagram XTR101 ISO100



Top