This is the simple project of small sound amplifier for ears or often called hearing aid device or hearing loss amplifier. This circuit was already […]
Category: Misc
Triac, SCR, Transistor Tester
This is the circuit diagram of TRIAC, SCR and Transistor tester. This is a very simple circuit which can be used for testing of SCRs […]
Low Cost Mosquito Repellent
Here is the simple and low cost mosquito repellent circuit design. The circuit serves to keep the mosquitoes out of the room or the location […]
Protector for Electronic Appliance with Three-Phase Power
This is the circuit design of the protector for electronic appliance with three-phase power supply. Many of electronic appliances need three-phase AC supply to work. […]
LED Indicator for 220V AC Mains
This is the schematic diagram of LED indicator for 220V AC Mains which can be used to indicate that the cable lines is connected to […]
12 Stage Water Level Indicator
The is a simple and versatile 12 stage water level indicator circuit which will show you the current water level in the tank. This circuit […]
Indicator Circuit for Mains 220V Blown Fuse
This is indicator circuit to indicate that there is blown fuse, it will show the condition of fuse through LEDs. This circuit works for fuse […]
Electronic Quiz Button Table
This is the circuit diagram of electronic quiz button table. This circuit is simple, easy to built and of course it is not expensive. This […]
Connection Tester
Here the low resistance connection tester which can be used as cable or wire tester, soldered joints and other types of connection with resistance value […]
Diode Zener Tester
This is the circuit diagram of zener diode tester which tests zener diodes with breakdown voltages extending up to 120 volts. This is a handy […]
