A Simple 12V Mini Emergency Light Circuit that features a Light Dependent Resistor (LDR) is a easy and efficient solution for lighting up spaces when the power goes out. This circuit activates a bright white LED automatically when the surrounding light dims. Running on a 12V battery, it is perfect for various applications, including homes, […]
LDR Circuits
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Light Controlled Switch Circuit using IC LM311 and LDR
A circuit that works as a Light Controlled Switch uses the LM311 integrated circuit along with a Light Dependent Resistor (LDR). This circuit is simple but very useful because it reacts to changes in light levels around it. You can find this kind of circuit in many places, like automatic lights, street lamps and security […]
Automatic Night Lamp Circuit with Photocell
This Automatic Night Lamp Circuit uses a photocell to measure how bright or dark it is around it. A night light that works with a photocell is an automatic lighting system that turns on a lamp when it gets dark and turns it off when it gets light again. This kind of setup is really […]
Building an LDR Comparator Circuit using IC LM339
In many electronic applications, especially those involving sensing and control, the LM339 comparator circuit is a flexible and crucial device. A Light Dependent Resistor LDR, resistors, an LED and the LM339 quad comparator IC allow us to build an easy yet functional circuit that can monitor light levels and offer visual feedback depending on the […]
Simple Electronic Candle Circuit using LDR
An enjoyable and somewhat basic electronics project is to make a simple electronic candle that uses a Light Dependent Resistor LDR to produce a flickering LED flame that switches on automatically in low light. To regulate the LED, which serves as the candles flame, the circuit makes use of the LDR variable resistance. The LED […]
Simple Flasher Circuit using LED and LDR
An LED and an LDR is used to make this simple basic flasher circuit. This circuit controls the LEDs blinking pattern by taking use of the LDRs ability to change resistance in response to light intensity. Without the need of complicated chips or transistors this device produces the effect of blinking LEDs. Basic electrical parts […]