Emergency Light & Alarm Project circuit

Each lamp lights in succession to give the appearance of a growing column. The described circuit features a sequential lighting system designed to illuminate a series of lamps in a cascading manner, creating the visual effect of a growing column of...

IC Controlled Emergency Light With Charger Circuit

This document presents the circuit diagram of an IC-controlled emergency light with a charger, which functions as a 12V to 220V AC inverter circuit. The primary features of this circuit include automatic activation of the light during mains failure and...

light up pumpkin

The concept involves placing a pair of yellow LEDs inside a pumpkin, combined with a photo sensor that activates the lights at night. The circuit is simple, utilizing minimal components. Two schematics are provided on the project site, with a...

Emergency Light & Alarm

This circuit is permanently plugged into a mains socket and NI-CD batteries are trickle-charged. When a power outage occurs, the lamp automatically illuminates. Instead of illuminating a lamp, an alarm sounder can be chosen. When power supply is restored, the...

LED Digital Panel Meter

To explain in a little more detail, using the ATMEGA8's internal 2.5 volt band gap reference means that by using a resistive divider ahead of the A-to-D converter, the input could be scaled such that any voltage range from 0...

LED Flasher Schematic

Here is the new flasher circuit schematic. It consists of a 555 timer circuit and a power transistor. The power transistor is likely over-specified, as it is rated at 10A, but it is the component that was available. The values...

Want To Dim Your LEDs with a TRIAC Dimmer?

LEDs react much faster than conventional bulbs. Light dimmers for standard bulb-based lighting have been in use for many years. The most common implementation of such dimmers... LEDs, or Light Emitting Diodes, are semiconductor devices that emit light when an electric...

Night Safety Light For Autos

This circuit activates the brake lights of a parked car when headlights from an approaching vehicle are detected, alerting the driver of the oncoming vehicle about the stationary car. LDR4 serves as the sensor, while LDR1 deactivates the circuit by...

28 LED Clock Timer circuit

This is a programmable clock timer circuit that utilizes individual LEDs to display hours and minutes. Twelve LEDs can be arranged in a circular pattern to represent the 12 hours on a clock face, while an additional 12 LEDs can...