Bedside Lamp Timer circuit | Next Electronics

The circuit has been successfully recreated and functions properly when the line connected to the 1 µF capacitor of the "2" terminal of the running lights' LM7812 is not grounded. This line is also connected to the 33 µF capacitor...

LED Ultraviolet exposure box

The LEDs are OSSV53E1A from OptoSupply and they have a 140° angle. This means that the first plane with uniform density can be obtained at a shorter distance from the LED, for a given spacing between LEDs which means smaller...

BarGraph Ccts

The LED meter is simpler and smaller than its analog counterpart and is commonly found in audio equipment. This version utilizes a National Semiconductor integrated circuit (IC) and employs a logarithmic scale. Each LED operates with a 3 dB difference...

Flashing LED unit

The circuit presented is designed as an LED flasher that creates a rotating effect when the LEDs are arranged appropriately. It operates with very low current consumption and can function using 3V button cells. The first integrated circuit (IC1), a...

Wiring diagram for 3 way switch

This project demonstrates a visual representation of audio volume levels through the use of LEDs that illuminate in response to music. The circuit connects to the speaker output of an audio amplifier, allowing it to gauge the audio signal's intensity....

Novel circuit diagram of the timer switch

A novel timing switch circuit features a "Variable Timing" adjustment function in addition to a standard timing circuit. It also includes a countdown display feature, which indicates the remaining time of the timing circuit, making it particularly useful. The entire...

8G—8 Dotmatrix Scrolling LED display using atmega8515

Here is another project that creates a scrolling LED display. This display consists of 64 LEDs arranged in a matrix configuration. The anodes are driven through a driver circuit. The scrolling LED display project utilizes a matrix of 64 LEDs, typically...

LED output from SB Live! Value

Many modern audio recorders are now compatible with digital input S/PDIF (Sony/Philips Digital Interface). Devices like CD changers, MiniDisc recorders, computer sound cards, and the like work with digital signals using the S/PDIF protocol. This digital connection between two devices,...

Solar LED light schematic

Purchase a 1W white LED and utilize a mobile phone battery to create a small lamp. A lampshade can be made from a glass-like milky white plastic bottle. The LED emits light through a radiating plate, which has two leads...