Posts by Arooha Dar

The dark-activated alarm is a circuit that is used to identify darkness or loss of light. It only produces an alarm sound in darkness becaus…

A multi-tone generator is often called a signal generator. A tone generator circuit is a simple electronic circuit, which has wide applicati…

A Relay Flasher circuit is used for operating the flashlights in various ways for many purposes such as a flashlight for a car. The relay ne…

The light fence circuit is used to detect the presence of any person or object in a specific area. The Light Fence Circuit detection range i…

A charge pump is a kind of converter that uses energetic charge storage condensers to increase or decrease voltage. Charge-pump circuits, wh…

Many electronics struggle with Tracing Curves, whether it be the smooth VI line of a capacitor or the voltage of a collector transistor agai…

The battery level monitor circuit can be used to indicate the required low battery level. This is an opamp IC 741 low battery alarm indicato…

Electronic devices, such as computers, printers, air conditioners, televisions, etc., use electricity when in use but still use some electr…

This circuit warns when a vehicle such as a car, jeep, bus, etc gets overheated, or its temperature rises above a safe level. The circuit wi…

Rechargeable batteries have very good efficiency and life if we look after them. There are many things to do to take good care of your recha…

The high / over temperature sensor or detector alarm is a circuit that senses the temperature of the circuit and activates the alarm and fla…

A frequency-to-voltage converter is an electrical system that transforms the frequency of sinusoidal input into an equivalent current or out…

The simple 12V battery status indicator is a circuit that shows the battery state only by flashing LEDs. For example, if out of 10 six LEDs…