Here are some DIY LDR switch circuits available on our website and the web. LDR switches are used to switch a relay or other device when light are present or absent. LDRs or Light Dependent Resistors ...

This is a very interesting a.c. voltage stabilizer that uses a LDR or photoresistor to stabilize an alternating current (AC). If the voltage increases then the brightness of the light bulb increases ...

The LDR circuit working: One terminal of LDR is connected to the base of the BC547 and other end of the LDR is connected to the collector of the transistor, and collector of the transistor is grounded ...

The primary goal of this project is to design a cost-effective and energy-efficient Dark Switch circuit that automatically controls electrical devices based on ambient light conditions. The project ...