Principle: A light-emitting diode isa two-lead semiconductor light source. It is a p–n junction diode that emits light when activated. When a suitable voltage is applied to the leads, electrons are able to recombine with electron holes within the device, releasing energy in the form of ...
Why does a light sensor circuit need a resistor to work and why does the resistor end up having no voltage and the LDR having a bigger share of the voltage? Where is a reed switch used in electronics? Find the change in electric potential energy between two charges that are initially a...
A simple temperature sensor with the circuit can be used for switching on or off the load at a specific temperature which is detected by the temperature sensor (thermistor is used here). The circuit consists of the battery, thermistor, transistors, and relay which are connected as shown in th...