This circuit uses a 555 timer as the bases of the touch switch. You can learn more about 555 timers in the Learning section on my site. When the plate is touched the 555 timer is triggered and the ...

A 12 volt miniature battery is used to power the circuit. Two transistors T1 and T2 are used as electronic switches to turn on / off the white LED. When there is sufficient light in the room, LDR ...

After successfully building the circuit, we took the project one step further by incorporating an Atmel ATtiny13 microcontroller. The code switches the LEDs on and off randomly for a flickering ...

2). With the circuit values shown, R2 will drop a bit less than 5 V before D3 turns on. Prior to turn on, D2 remains back-biased and no current flows through the LED (D1). When the potential at ...

If you're using switches with motion sensors or timers, the LED bulb may draw power from their circuits and emit a faint glow. Additionally, issues with the electrical wiring in your home or ...

Save guides, add subjects and pick up where you left off with your BBC account. The scientists are going to show us how electrical energy flows around an electrical circuit. Title: Circuit symbols ...