Scrchaser circuit | Next Electronics

Most circuits utilize a 5 V regulated power supply for microcontrollers and sensors, as 8-bit microcontrollers operate efficiently at this voltage. The 5 V supply is adequate for powering white LEDs, thus the specific voltage requirements of individual LEDs are...

LED or Lamp Pulser

This circuit operates a LED in pulsing mode, i.e. the LED goes from off state, lights up gradually, then dims gradually, etc. This operation mode is obtained by a triangular wave generator formed by two op-amps contained in a very...

LED TesterCircuit

These small electronic lamps are quite practical and have a long lifespan. Approximately 40 years after Nick Holonyak invented the first LED, they have become nearly essential. Any dedicated electronics enthusiast typically keeps a few in their collection. Prior to...

Exit Sign With Battery Protection

This circuit replaces two white Luxeon 1W Star LEDs for the inverter and fluorescent tube in a standard battery-powered illuminated exit sign, commonly found in commercial buildings. Although the Luxeon LEDs produce less light output than a typical small fluorescent...

Thrifty LED Protector

An LED will fail if the current flowing through it is excessively high. This issue can be easily resolved by incorporating a simple resistor in series, which is an effective and low-cost solution. However, as the power supply voltage increases,...

16 Stage Bi-Directional LED Sequencer

The bi-directional sequencer employs a 4-bit binary up/down counter (CD4516) and two "1 of 8 line decoders" (74HC138 or 74HCT138) to produce the widely recognized Nigh. The bi-directional sequencer circuit is designed to manage the sequencing of outputs based on a...

9 LED VU meter

This simple and easy to make circuit is a 5 LED VU Meter based on LB1409 IC from SANYO, which will indicates the volume level of the audio signal it senses. SUPPLY 12V DC @ 50mA. PR1 REF SET. PR2...

LEDs and resistors circuit

An LED, or Light Emitting Diode, is a semiconductor device that allows current to flow in one direction while blocking it in the opposite direction. This characteristic makes LEDs polarized components, having a positive side known as the anode and...

1 5 volt led flashers

The LED flasher circuits operate on a single 1.5-volt battery. The circuit on the upper right utilizes the widely used LM3909 LED flasher integrated circuit (IC) and requires only a timing capacitor and an LED. The LM3909 is a specialized integrated...