Under this post we investigate 4 simple 220V Mains Uninterruptible power supply (UPS) designs using 12V battery, which can be understood and constructed by any new enthusiast. These circuits can […]
How to Make a Simple 12 Volt LED Lantern Circuit
In this post we will try to build a simple 12V LED lantern circuit which may be used at night while travelling and outings such as in picnics, trekking, or […]
2 Simple Infrared (IR) Remote Control Circuits
The proposed infrared or IR remote control circuit can be used to operate an appliance ON/OFF through any standard TV remote control handset. In this write up we discuss a […]
Simple Hobby Circuit Projects
A few of the interesting and useful hobby electronic circuit diagrams already published in this blog have been selected and compiled here for quick reference and understanding. Magnetic Field Detector […]
How to Make a Simple Metal Detector Using IC CS209A
The principle of operation of the proposed metal detector circuit is quite basic yet very interesting. The detecting function is triggered by sensing the decrease in the Q level of […]
2 Simple Frequency Counter Circuits
A couple of very simple frequency counter circuits are shown below and can be easily built by any electronic enthusiast for the intended purpose. The circuit diagram was provided by […]