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