Working in a darkroom is always fraught with problems. You surely know Murphys Law of; but Let’s not go into that here. Suffice it to say that normal lights cannot […]
Recording Level Meter Circuit
This simple recording level meter circuit can be used for displaying the recording level of an audio system. The circuit shows a two—stage voltage amplifier driving a recording level meter. […]
Transmitting Electricity Without Wires
Here’s 2 pictures which shows how to transfer electricity without using wires, one is the fully completed second sec exciter is guess what despite the last 2 series coil sections […]
Signal Injector Circuit
While troubleshooting amplifier and audio related equipment, a signal injector circuit becomes one of the most essential tools, here we learn how to make a signal injector circuit. Here is a two […]
Simple Transistor Tester Circuit
Simple transistor tester circuit is quite easy and low cost circuit, is just not built to calculate any transistor efficiency figures, however is designed to get fast testing to signify […]
Light Activated Switch Circuit
This light activated switch circuit, automatically switches ON a connected lamp when night falls, and switches it OFF during day break. It has many applications, it could be used as […]