All Electronics Hobby Projects. You can build quickly them when have free times. Most cheap and easy to find parts.
This is simple hight power LED flashlight,we use 24 LEDs super bright for display and 3 AA batteries and resistor for limit current so cheaper.
This is graphic equalizer circuit with PCB on 5 channel and 10 channel using LA3600. Cut frequencies of 50Hz, 200HZ,800Hz,3.2kHz10kHz. Supply voltage +12V. [...]
Today, My son make a toy for younger sister. It is a Simple big robot toothbrush. The principle is very simple, It vibrates with movement, without direction and control. He…
This is a fast blinking LED bike light circuit For safety when the bike at night. We use two-NPN-PNP transistor oscillator circuit and RC circuit only show on 4 LEDs…
his be Super Bridge 120W Power Amplifier by IC TDA2030 for you like the circuit amplifies that use the integrated circuit. and Transistor BD249 or TIP31
This is high power Mosfet amplifier,300W - 1200watt at load 4-8 ohms , For use in applications such as concert, theater, festivals, most suitable. [...]
This is AC variable power supply circuit that apply output of 0-30V at 3A by use electronic components, bridge diode,and more, to control voltage[...]