This is the circuit diagram of game scoring display using 7 segment LED. This circuit consist of a timer IC, two decade counters and a display driver along with a 7-segment LED display to show the […]
Circuit Schematic Diagram
Aquarium Temperature Probe
This is the electronic circuit diagram of aquarium temperature probe capable to monitor the temperature of water and indicate the rise in temperature through audio-visual indicators. This circuit uses diode 1N34 as the temperature sensing probe. […]
Analog Flip-Flop
Here the analog flip-flop circuit which built based on 2 transistors work as switch. This is very easy made and very cheap circuit. You can use this circuit as “the first project” for your students… 🙂 […]
250W RMS Power Amplifier Legend Stage Master
Here is the 250W RMS power amplifier circuit called Legend-Stage Master. This is the previous version of Legend-Stage Master MK2. The circuit is based on power MOSFET and give a great output performance for indoor audio […]
Galaxy Audio Booster using RC4558
The following is an electronic circuit called galaxy audio booster which serves to improve the performance of your audio system. This circuit uses an IC RC4558 in which there are two op-amp modules that can be […]
Laptop / Notebook Protector
This is laptop / notebook protector circuit to protect your laptop or notebook or netbook from being stolen. Fixed in-side the laptop case, it will sound a loud alarm when someone tries to take the laptop. […]
A Hierachical Priority Encoder
The above diagram is a hierachical priority encoder circuit. Described on wikipedia, priority encoder is a electronic circuit or algorithm that compresses multiple binary inputs into a smaller number of outputs. The output of a priority […]
4 Stage FM Transmitter
This is the FM transmitter circuit which apply 4 radio frequency stages, that are a VHF oscillator designed around transistor BF494 (T1), a preamplifier designed around transistor BF200 (T2), a driver designed around transistor 2N2219 (T3) […]
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 stealing. This circuit is very simple, low cost and easy to built. When key-operated switch S2 […]
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 circuit works to charge 3 types of rechargable batteries that are lead acid, Ni-Cd and Li-ion. […]