LED Bike Light Circuit | Next Electronics

This circuit offers a cost-effective alternative to the LM3915 series LED displays. It utilizes a square-wave oscillator constructed with two CMOS analog switches, which alternately select the right and left channels for monitoring and display. The chosen signal is amplified...

Regulated LED Lamp

The LM317L and resistor act as a current regulator set to 40ma. Current flows from the battery through one pair of LEDs, through the regulator, through the other pair of LEDs, and back to the battery. The capacitor filters out...

1 5 hour lamp fader sunset lamp

The sunset lamp activates at full brightness and gradually dims over a duration of 1.5 hours, remaining off until the power is reset. The sunset lamp circuit is designed to simulate the natural fading of sunlight, providing a calming effect as...

Light detector switch

Is there a way to automatically turn on an LED when it gets dark? A version was created using a relay and photoresistor that functioned properly, but concerns arose regarding potential battery drain. The project aims to integrate with a...

Led Millivoltmeter

This circuit utilizes a DC amplifier (LM324) in a bar-graph configuration that employs an LM339 quad comparator integrated circuit (IC) to detect DC levels. The LEDs illuminate for every 100 mV increase. The LM324 operational amplifier is set up to...

1.5V LED FLasher Using 3 Transistors

To make an LED function, a voltage source is required that exceeds the LED's forward bias voltage, which is typically greater than 1.5V (approximately 2V for red LEDs). To effectively operate an LED, it is essential to provide a voltage source...

Ultra Bright LED Lamp circuit

This ultra-bright white LED lamp operates on 230V AC with low power consumption. It is suitable for illuminating VU meters, SWR meters, and similar applications. The ultra-bright LEDs available in the market range from Rs 8 to 15. These LEDs...

1.5 Volt LED Flashers circuit

The LED flasher circuits operate on a single 1.5-volt battery. The circuit on the upper right utilizes the popular LM3909 LED flasher IC and requires only a timing capacitor and an LED. The LED flasher circuit using the LM3909 integrated circuit...

LED Light Pen

Physicians and repair engineers often utilize small light pens for visual examination purposes. While these pens are rugged and can be expensive, their weak point is the bulb, which is a serviceable part. In practice, this often translates to the...