Smart Sensitive Electronic Hearing Aid

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

55 years ago

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

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

55 years ago

5V DC Regulated Power Supply with Short Circuit Protection

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

55 years ago

Water Level Indicator with Single 7 Segment LED Display

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

55 years ago

Electronic Dice Based Microcontroller Atmel AT89C2051

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

55 years ago

Car Anti-Theft Protection with Buzzer

This is the circuit diagram of car anti-theft to protect and increase the security of your car, prevent your from…

55 years ago

Battery Charger + Small LED Lamp based Solar Cell / Photovoltaic

This is the circuit diagram of rechargable battery charger which use solar cell / photovoltaic as the DC source. This…

55 years ago

Electronic Candle Circuit using TTL IC

This is a simple and easy built electronic candle circuit which build using TTL (transistor-transistor logic) that are 74LS164, 74LS86…

55 years ago

Electronic Stopwatch

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

55 years ago