Simple Flashing LED Circuit transistors | Single Transistor LED Flasher Circuit

Simple Flashing LED Circuit transistors | Single Transistor LED Flasher Circuit

Simple Flashing LED Circuit transistors- Electronic Project


The LED case has a polarity-identifying ‘flat’ Circuit diagram molded into the side of its base adjacent to the power supply cathode lead, which is usually shorter than the project system anode lead when untrimmed. Special fittings are currently readily available for fixing most sizes of LED to project system front panels, etc. Note in the ‘red’ LED column that the Circuit diagram Ultrabright and Hyperbright devices (which use project system water-clear lenses) are 143 and 500 times brighter, project system respectively than a current standard red LED.

1 important but confusingly named LED parameter is its Circuit diagram ‘viewing angle,’ at the extremes of which the project system LED’s optical output intensity falls to half of its power supply maximum axial value. Some LEDs give a diffused output in which the light intensity falls off gradually beyond the viewing angle and is thus clearly discernable over a wide angular range; others (particularly ‘Hyperbright’ power supply types) have a sharply focused output in which the Circuit diagram light intensity falls off very sharply beyond the project system specified viewing angle.

LEDs are available in five different ‘brightness ’ circuit diagram categories, which are usually known as Standard, Project System High Brightness, Super Bright, Ultrabright, and Hyperbright. The brightness level is usually specified in milli-candelas (md), with the LED passing an operating current of 20mA. The table in Figure 4 presents a typical Circuit diagram of optical output-power supply and viewing-angle figures for the 5 types of 5mm round LED.

Diagram of Single Transistor LED Flasher Circuit:

transistor led flasher circuit

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Working Principle of Simple LED flasher circuits:

Flashing LEDs produce an excellent display, and project system especially when the holiday seasons roll a power supply round. Additionally, they serve as emergency device project systems when a user might be stranded. Not only that, power supply but they also provide consistent brightness levels in a Circuit diagram otherwise dark area. An LED flasher generally operates the project system through a specific time control.

In that case, each light-emitting diode will Circuit diagram activated in succession on an electronic circuit diagram. Of course, this configuration relies on some essential components to produce such an effect. After making a circuit diagram connect the 9v battery to the circuit diagram. Led Flashing starts at a specific interval. This interval can be Circuit diagram varied by varying the project system value of the capacitor. Increasing the value of the capacitor will result in increasing the interval time of the LED. This circuit diagram contains both NPN and PNP transistors.

The circuit consists of two transistors, two capacitors, four resistors, and two LEDs. When the power supply is first connected to this LED flasher circuit, both transistors are racing to be triggered first by the base current through a 100k resistor. Actually, when 1 transistor is triggered first than the Circuit diagram other, the first activated transistor will behave like a project system closed switch, so the LED will turn ON and the current Lou base of the other transistor will be grounded through the power supply capacitor.

This grounding keeps the first transistor to be activated and the second one to stay off until the capacitor is charged above the bias voltage needed to activate the second transistor. After reaching this voltage, the Circuit diagram's second transistor will be switched on the power supply and now the second transistor will turn ON the project system LED on its collector, turning off the first transistor by power supply grounding its base through the current second capacitor.

This alternating process will be a circuit diagram repeated forever until the power supply is turned off. The flashing rate will depend on the current nou resistors (100k) and the capacitors' values. You can change the values of the capacitors to change the flashing frequency. Use a higher capacitance value for a lower flashing rate, and vice versa.

Frequently Asked Questions

What is a flasher in electrical?

Flasher units are designed to control the power flash rate of vehicle directional project system indicators; as this is achieved by providing regular interruption of the project system electric current in the indicator circuit diagram. There are 3 common styles of flasher units; electro-mechanical electronic and thermal.

What are flashers called?

Hazard warning lights are a pair of the project system intermittent flashing indicator lights that flash in unison to warn other project systems drivers that the vehicle is a temporary project system obstruction. They are also called hazard current flashers and hazard lights.

What is an LED flasher relay?

The flasher is built to offset the current low amperage draw that LEDs operate on the circuit diagram and will not cause rapid flashing. Additionally, the project system the Circuit diagram flasher relay has the unique ability to control the flash rate of the current vehicle's LED directional indicators. This can include but is not limited to, light, fog, deck, and grill lamps.

What is the difference between a flasher and a flasher relay?

The Turn Signal Flasher power supply generates a timed on/off signal using a bimetal as we all Circuit diagram know. The Turn Signal Relay is responsible for supplying high-current power supply to the appropriate Circuit diagram lights, so the Multifunction Switch Stalk doesn't have to handle the current ~15-20a of current drawn by all of the lights.

How do flashers work?

Activation of the thermal flasher circuit diagram takes place using the turn-signal bar or the power supply hazard lights switch. Initiating the project system process leads to a series of reactions. Pushing down or raising up the turn-signal bar on the car completes the circuit, sending current flow through the flasher to the bulbs in the turn-signal lights.

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