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 ...

Let's see the top 10 electronic projects and circuits for October 2010. We publish this top 10 on monthly bases and we try to show you the most viewed ...

Thermistors and LDRs You should be able to recognise the circuit symbols for a thermistor and an LDR (light-dependent resistor), and know how the resistance of these components can be changed.