Simple Lamp Dimmer/ Fan Regulator Circuit
Lamp Dimmer/Fan Regulator Circuit We have modified this circuit: - Take a look - Modified Lamp Dimmer Description The light dimmer circuit or fan regulator circuit (either case, the circuit and design are the same, only difference is the... read moreFridge Door Open Alarm
Fridge Door Open Alarm Circuit Description A fridge door open alarm circuit is explained with its detailed working and circuit. The objective of this circuit is to produce an audible alarm when fridge is left open for more than... read moreSecurity Alarm Circuit With High Power Siren
High Power Siren Security Alarm Circuit Description In this article, we have designed a transistor based security alarm circuit with a high power siren that can be used to provide security for homes or as a warning for intruders... read moreAutomatic LED Emergency Light Circuit
LED Emergency Light An Automatic LED Emergency Light circuit is designed to turn ON when there is no adequate lighting or if the power supply is cut-off. Earlier fluorescent lights were used to build such circuits. But the use... read moreVolume Control Circuit
Digital Volume Control Circuit All audio amplifiers have some mechanism to increase and decrease volume. Most such mechanisms involve mechanical parts like a potentiometer. Here this project is to create an audio controller which works digitally. This is a... read moreElectronic Combination Lock using IC LS 7220
Electronic Combination Lock Circuit Description A simple electronic combination lock is designed using IC LS 7220. This circuit can be used to activate a relay for controlling (ON & OFF) any device when a preset combination of 4 digits... read moreTone Generator – Ding-Dong Bell using IC 8021 and Transistors
A simple “tone generator” is a cool circuit that everyone must build in their electronics learning process. We’ve designed this tone generator circuit using 8021 IC, two transistors (BC548 or C8050), a small speaker and some associated components. As... read moreSimple Proximity Detector
In this project, let’s learn how to make a Simple Proximity Detector or Sensor circuit using minimal components. A proximity detector is a fun project with lots of interesting applications to be built with. You can make very useful... read more