LDR Light Dependent Resistor
Electronic devices Electronics tutorial Passive components Resistors Sensors

Light Dependent Resistor (LDR) / Photoresistor Circuit Diagram & Working

Light Dependent Resistor (LDR) are widely used in various applications where light detection is required, such as in automatic street-lights, camera light meters, and burglar alarm systems. This article will delve into the symbol, construction, working principle, characteristics, advantages, disadvantages, and applications of LDRs. Additionally, a simple LDR circuit to detect light will be explained […]

Potentiometers
Electronic components Electronics tutorial Passive components Resistors

What are Potentiometers or Variable Resistors

Potentiometers are electrical component used to measure or adjust voltage or current, it usually consists of a rotary or sliding adjusting device, and three electrical contacts, one of which is connected to the power supply, the other is grounded, and the third can be moved on the adjusting device of the potentiometer, which can be […]