Low Current Triggered Relay using 2n3904 Transistors
This is a project of a low current triggered relay that is used to trigger a relay switch … Read more
2n3904
Sound Activated Knight Rider / LED Chaser
Here is an extremely intriguing DIY project of a sound-activated knight rider/LED chaser circuit. The circuit will create … Read more
Simple Automatic Water Pump Controller with 2N3904 Transistors
The article portrays a basic and economical “automatic water pump controller” circuit. A “water pump controller” detects the … Read more
Automatic Delayed Turn-Off Car Headlights
A delayed headlight lamp control for a vehicle permit one to enlighten the way on streets, and car … Read more
Simple Automatic Day Night Switch using LDR
We are all well aware, of how much it is necessary to save electricity in the present situation … Read more
Sensitive FM Field Strength Meter Or RF Detector
In this project, we are demonstrating the FM Field Strength Meter or RF detector circuit. This is a … Read more
Microphone Preamplifier Circuit Using 2N3904 Transistor
A Microphone preamplifier is an electronic circuit that serves the purpose of pre-amplifying weak audio signals. When the … Read more