a simple circuit to make your own light

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...

Positive and negative from a battery LT1010

A common need in many systems is to obtain positive and negative supplies from a single battery. Where current requirements are small, the circuit shown is a simple solution. It provides symmetrical +&- output voltages, both equal to one half...

Incandescent LED Circuit

This circuit when used with a 555 timer will cause light emitting diodes to turn on and off more slowly. This will make the LEDs appear similar to incandescent lamps. The described circuit utilizes a 555 timer IC configured in an...

A simple LED lamp circuit from scrap. Uses 5 LED and takes only 50 mA

Convert a used CFL into a power-saving LED lamp circuit that consumes only 50mA. This gadget can be used in applications like a night light, table lamp, etc. The project involves redesigning a compact fluorescent lamp (CFL) to function as an...

LED Crystal Tester

Transistor Q1, a 2N3563, and its associated components form an oscillator circuit that will oscillate if, and only if, a good crystal is connected to the test clips. The output from the oscillator is then rectified by the 1N4148 signal...

25 LED Sequencer schematic

This circuit is same as the above setup to drive 25 small Xmas lights. The lights operate at about 200mA and 3 volts. The supply voltage is set to 5 volts and the 4017 counter output will drop about a...

Police Car Lights with LEDs

This circuit simulates the flashing lights of a police car, similar to those seen on British police vehicles. The operational amplifier IC1a functions as a square wave oscillator, with an adjustable frequency controlled by the variable resistor VR1 to achieve...

Led Christmas Tree Light Flasher Circuit

Three individual flashing circuits utilizing an LM3909 LED flasher/oscillator IC create the illusion of a pseudo-random firing order. The capacitors CX1, CX2, and CX3 control the blink rate, which ranges from 0.3 to 0.8 seconds. The wide tolerance range of...

Bonsai electronic circuit

The electronic components designed by conventional electronic bonsai create a sparkling and brilliant atmosphere in the living room, enhancing the joys and pleasures of life. The selection of components includes IC1 to IC4, which consist of two pairs of D...