chandelier circuit
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LED Traffic Lights for Games with 555
The LED traffic Light circuit controls 6 LEDs (red, yellow and green) for both north/south directions and east/west directions. The timing sequence is generated using a CMOS 4017 decade counter and a 555 timer. Counter outputs 1 through 4 are...
6V Ultra-Bright LED Chasers
This project involves a sequence of Ultra-Bright LEDs that light up briefly in a circular pattern, mounted on a CD. The LEDs flash for 15 milliseconds, followed by a one-second pause, creating a visually appealing effect. The brief flashes and...
LEDs or Lamps Sequencers
The purpose of this circuit is to create a ring in which LEDs or lamps illuminate sequentially. Its main feature is high versatility; it can accommodate any number of LEDs or lamps, as each illuminating device has its own small...
Using AC for LED Christmas Lights
This circuit utilizes low-voltage AC to power a string of approximately 50 bi-color LEDs, with two LEDs connected in inverse parallel. The power supplied to the LEDs is managed by a Triac and two optocouplers, whose phototransistors are also connected...
10 Step LED Circuit
Each time switch S1 is closed the count on the CD4017 advances by 1 step and the corresponding LED turns on. When the maximum count plus 1 is reached for each circuit the cycle is restarted and repeats.
The circuit utilizes...
Emergency warning light LED alarm
The emergency driver unit includes a battery charger and electronic circuitry housed in a compact case. It features battery protection for emergency lighting against overcurrent and heat. Additionally, it has protection for the liquid crystal display (LCD) screen against short...
LED Flashlight circuit with MAX1811
White LEDs have a rated current at a voltage drop of about 3.3 to 3.4 V. It is ideal to be powered from the battery voltage which is slightly larger. Then there is the best energy used. In this I...
White LED is Powered by Joule thief
Numerous white LED driver circuits are available, with a well-known design called the Joule Thief capable of powering a single white LED from a 1.2V or 1.5V battery cell. Most of these circuits utilize one or two transistors to create...
ve170 monitor repair with led
The issue with this monitor is that the power supply for the vacuum tube backlighting fails. The initial step involves completely disassembling the monitor into smaller components, followed by the careful removal of the gold-colored trays that hold the vacuum...