Simple touch switch using transistor
This Simple touch switch using transistor is the touch switch is updated from the original version. Which use IC to control the operation cause difficult for the electronics beginner. So this circuit is thought to are suitable because uses TR purely. When was broken also a simple repair. and More …
Simple astable multivibrator circuit using CD4047 Cmos IC
When we say to the an astable multivibrator circuit, Many people will think to Many people think of as the most IC-555. But this time, it is recommended circuit in Figure 1. Which use IC-4047 CMOS as Simple astable multivibrator circuit with ability of this nature as well. And the …
Simple emergency light circuit with charger
This is Simple emergency light circuit with charger that light on 30 minutes after the power outage, so use normal transistor as base of circuit. At the time of power failure. Especially during the night. Many people do not like the dark. Emergency lighting systems on the market, it has …
Time delay for relay using CD4011
This time delay relay circuit can be used to time delay for the load, To be connected to the relay output to run after a specified time. Which during this time. Can be adjusted by changing the R1 and / or C1. The current of circuit is limited by type …