What is a light chaser circuit?

What is a light chaser circuit?

This is the circuit of a simple LED chaser. The LEDs lights one by one for a period of 1second and the cycle repeats giving the running light appearance. The circuit uses two ICs (one is 555) to drive the LEDs. Out of the 10 outputs of IC2, eight outputs are used to drive the LEDs.

How do chaser lights work?

Each set has an independent controller that cycles through each of the three circuits (1-2-3). Set at a slow enough speed, the lights visually look like they are chasing each other, like bulbs that flash on and off around a marquee sign. Chasing light have a single male end plug and cannot be connected end to end.

How do you make a light chaser circuit?

Let’s get started,

1. Step 1: These Components Required to Make This Project.
2. Step 2: Connect Emmiter of Transistors.
3. Step 3: Connect 100uf Capacitors.
4. Step 4: Connect +ve Pin of 3rd Capacitor.
5. Step 5: Connect 560 Ohm Resistor.
6. Step 6: Connect 10K Resistors.
7. Step 7: Connect All Wires of 10K and 560 Ohm Resistors.

How does a led chaser work with a sequencer?

FIGURE 3. A 4017B LED chaser/sequencer test and demonstration circuit. In Figure 3, the 555 timer IC (IC1) is used as a variable-frequency asymmetrical squarewave generator that feeds clocking signals to the CLK input terminal of the 4017B IC (IC2). This output waveform is normally high, but briefly flips low once per cycle and drives LED5 on.

What kind of circuit is best for led chaser?

The circuit is best built on a ‘plugblock’ type of breadboard unit, in which components and wires are simply pushed into the unit’s sprung-contact blocks. FIGURE 3. A 4017B LED chaser/sequencer test and demonstration circuit.

How does the chase rate of an led work?

The LED’s chasing rate can be adjusted using a potentiometer in place of 47K resistor. Watch the video above for detailed step by step instructions on how to build this circuit. Explanation of how the circuit works is also included in the video. [Schematic for this LED chaser circuit is at the end of this article]

What is the impedance of a led chaser?

Thus, when the current is increased from 10mA to 30mA, the forward voltage increases by only 0.22V and, in this case, the LED thus acts like a pure voltage (zero impedance) load in series with an 11-ohm impedance. In practice, this impedance varied between 10 and 15 ohms over most of the LED’s working current range.