simple strip led lamp circuit

This circuit operates two LED strips in pulsing mode, i.e. one LED strip goes from off state, lights up gradually, then dims gradually, etc. while the other LED strip does the contrary. Each strip can be made up from 2...

voltage How can I make LEDs light up equally

There are three switches that represent a binary number, and according to the combination of those switches, the number of lit LEDs changes to represent that binary number. There is a question regarding how to provide equal current and voltage...

Circuit Project: A Handy Pen Torch

This easy-to-construct "Handy Pen Torch" electronic circuit has a low component count and utilizes two power white LEDs for lighting. It operates on a low voltage supply of 4.8V DC. The Handy Pen Torch circuit is designed to provide a compact...

Puff to OFF LED circuit

This circuit features an LED that can be turned off with a puff of air. A condenser microphone (M1) detects the puff. When the push button switch S1 is activated, transistors Q2 and Q3, configured as a latching pair, are...

Battery operated mini night lamp

This circuit is designed as a low-power LED night lamp that automatically switches off during daytime. The CMOS timer IC TS555CN is configured as a square wave generator operating at approximately 5 Hz. The output voltage from the IC is...

LED driven tail/brake Light Cluster

This circuit was designed on request to drive a Light-cluster formed by several LEDs that can be mounted in the vehicle as a tail and brake light. When SW1 is on, the cluster will illuminate at medium brightness. When brakes...

Fine Control Super Bright LED Pulser

The circuit utilizes two white LEDs, with the second LED connected across the emitter of the transistor and the negative ground. It requires its own limiting resistor in series, similar to R15 and D3 in the circuit diagram. If standard...

Phone in use indicator by LED

This circuit is useful to show when your line is busy. I used for this a pair of SMT transistors, the LEDs on when the voltage drops down to 40 V. The circuit described functions as an indicator for a busy...

Temporary LED Lamp/Illuminator

This temporary lamp circuit is very useful in emergency situations or in any application where there is limited time to turn off the lamp. Just press the switch to activate. The temporary lamp circuit is designed to provide immediate illumination during...