This is the circuit diagram of electronic hearing aid featured with sensitive sound detection and energy saving, so this hearing…
This is the circuit diagram of battery charger which has many important features such as current-constant charging, overcharge protection, short-circuit…
This is the circuit diagram of 5V DC regulated power supply which featured with short circuit protection system. There are…
This is an unique water level indicator circuit which use 7 segment LED display to show the current water level…
This is the circuit diagram of electronic dice which built based microcontroller chip of Atmel AT89C2051. The application of this…
This is the circuit diagram of car anti-theft to protect and increase the security of your car, prevent your from…
This is the circuit diagram of rechargable battery charger which use solar cell / photovoltaic as the DC source. This…
This is a simple and easy built electronic candle circuit which build using TTL (transistor-transistor logic) that are 74LS164, 74LS86…
The above simple circuit design can be utilized as an accurate stopwatch to count up to 100 seconds with a…