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Industrial Valve Switching Detector Indicator Circuit

Last Updated on July 15, 2019 by Swagatam Leave a Comment

The following post explains a circuit idea which can be used for identifying the switching pattern of set of valves from a remote location, using just two wire from the […]

Filed Under: 555 IC Circuits, LM3915 IC, Sensors and Detectors

Up/Down LED Indicator using LM3915

Last Updated on March 2, 2020 by Swagatam 2 Comments

This circuit can be used for moving an LED bar graph in the upward sequence or downward sequence through a couple of push button switches. The concept can be implemented […]



Filed Under: LED and Light Effect, LM3915 IC, Sensors and Detectors

Battery Charging Fault Indicator Circuit

Last Updated on February 6, 2022 by Swagatam 130 Comments

The article explains a battery status indicator circuit which can be also used as a battery charging fault indicator circuit. The idea was requested by Mr. Faizan. The Design The […]

Filed Under: Battery Chargers, Inverter Circuits, LM3915 IC

Footstep Activated LED Trouser Light Circuit

Last Updated on July 15, 2019 by Swagatam 1 Comment

The post explains how to transform your ordinary trousers into a chasing LED lit trousers which produces an shooting LED light chasing effect in response to your footstep movement or thumping. […]

Filed Under: Decorative Lighting (Diwali, Christmas), LM3915 IC

Electronic Load Controller (ELC) Circuit

Last Updated on November 8, 2021 by Swagatam 76 Comments

The post explains a simple electronic load controller or governor circuit which automatically regulates and controls the rotational speed of a hydro-electric generator system by adding or deducting an array […]

Filed Under: LM3915 IC, Motor Controller, Water Level Controller

3v, 4.5v, 6v, 9v, 12v, 24v, Automatic Battery Charger Circuit with Indicator

Last Updated on August 28, 2021 by Swagatam 312 Comments

An all-in-one automatic voltage battery charger circuit is discussed in the following post; the circuit can be modified in many different ways as per individual requirements and applications. The following […]

Filed Under: Battery Chargers, LM3915 IC



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