Misc

Small Sound Amplifier for Ears (Hearing Aid)Small Sound Amplifier for Ears (Hearing Aid)

Small Sound Amplifier for Ears (Hearing Aid)

This is the simple project of small sound amplifier for ears or often called hearing aid device or hearing loss…

55 years ago
Triac, SCR, Transistor TesterTriac, SCR, Transistor Tester

Triac, SCR, Transistor Tester

This is the circuit diagram of TRIAC, SCR and Transistor tester. This is a very simple circuit which can be…

55 years ago
Low Cost Mosquito RepellentLow Cost Mosquito Repellent

Low Cost Mosquito Repellent

Here is the simple and low cost mosquito repellent circuit design. The circuit serves to keep the mosquitoes out of…

55 years ago
Protector for Electronic Appliance with Three-Phase PowerProtector for Electronic Appliance with Three-Phase Power

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…

55 years ago
LED Indicator for 220V AC MainsLED Indicator for 220V AC Mains

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…

55 years ago
12 Stage Water Level Indicator12 Stage Water Level Indicator

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…

55 years ago
Indicator Circuit for Mains 220V Blown FuseIndicator Circuit for Mains 220V Blown Fuse

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.…

55 years ago
Electronic Quiz Button TableElectronic Quiz Button Table

Electronic Quiz Button Table

This is the circuit diagram of electronic quiz button table. This circuit is simple, easy to built and of course…

55 years ago
Connection TesterConnection Tester

Connection Tester

Here the low resistance connection tester which can be used as cable or wire tester, soldered joints and other types…

55 years ago
Diode Zener TesterDiode Zener Tester

Diode Zener Tester

This is the circuit diagram of zener diode tester which tests zener diodes with breakdown voltages extending up to 120…

55 years ago