Clap On / Off Switch

54 years ago

This is the circuit diagram of Clap On / Off Switch. The circuit allows you to operate your lighting or…

Traffic Baton with Bulb or LED Flasher

54 years ago

This is the traffic baton circuit which available in two versions that are traffic baton with LED flasher and traffic…

Smart Sensitive Electronic Hearing Aid

54 years ago

This is the circuit diagram of electronic hearing aid featured with sensitive sound detection and energy saving, so this hearing…

6V / 9V / 12V Battery Charger with Constant-Current Charging

54 years ago

This is the circuit diagram of battery charger which has many important features such as current-constant charging, overcharge protection, short-circuit…

5V DC Regulated Power Supply with Short Circuit Protection

54 years ago

This is the circuit diagram of 5V DC regulated power supply which featured with short circuit protection system. There are…

Water Level Indicator with Single 7 Segment LED Display

54 years ago

This is an unique water level indicator circuit which use 7 segment LED display to show the current water level…

Electronic Dice Based Microcontroller Atmel AT89C2051

54 years ago

This is the circuit diagram of electronic dice which built based microcontroller chip of Atmel AT89C2051. The application of this…

Electronic Stopwatch

54 years ago

The above simple circuit design can be utilized as an accurate stopwatch to count up to 100 seconds with a…

12V 4A Solar Photovoltaic Battery Charger

54 years ago

This is the circuit diagram of 12 Volts, 4 Amperes Solar Photovoltaic (PV) battery charger which will be suit to…

Ding-Dong Door Bell

54 years ago

This ding-dong door bell circuit might become the simplest and cost-effective door bell circuit. The circuit is designed based on…