This is a project of a low current triggered relay that is used to trigger a relay switch with only 5µA current. It is done by using a bistable relay and adding a few more … Read more
2n3904
Here is an extremely intriguing DIY project of a sound-activated knight rider/LED chaser circuit. The circuit will create a running LED light effect from right to left for a brief time frame period when any … Read more
Sound Activated Knight Rider / LED Chaser
The article portrays a basic and economical “automatic water pump controller” circuit. A “water pump controller” detects the level of water in a tank and drives the water pump. The controller controls the output and … Read more
Simple Automatic Water Pump Controller with 2N3904 Transistors
A delayed headlight lamp control for a vehicle permit one to enlighten the way on streets, and car parking, where there is no lighting. Additionally, it is also likewise called “Relay Delay”, it keeps the … Read more
Automatic Delayed Turn-Off Car Headlights
We are all well aware, of how much it is necessary to save electricity in the present situation where it is getting hard to meet the required and desired production of electricity for our urban … Read more
Simple Automatic Day Night Switch using LDR
In this project, we are demonstrating the FM Field Strength Meter or RF detector circuit. This is a project of exceptionally sensitive FM field strength meters or we can likewise say them RF detectors. A … Read more
Sensitive FM Field Strength Meter Or RF Detector
A Microphone preamplifier is an electronic circuit that serves the purpose of pre-amplifying weak audio signals. When the audio source (usually a microphone) sound level is too low. The main function of a Preamplifier circuit … Read more