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selseg
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What simple circuit that I can design for a 3V high power LED with max current 0.8 amps , I think the component names would help me , I would like to power it on 4.5 to 9 V batteries .Preferably lower voltages. Thanks
Antiphon said:Connect the 9v battery to the led in series with a (9-3)/.8 Ohm resistor.
On a 4.5v battery use a (4.5-3)/.8 ohm resistor.
They're using voltage regulator chips in a "constant current" configuration.selseg said:Thank you very much , I checked from the link below earlier on . Why do they include the LM317 in that circuit ? in another circuit i found online , they used l7805. Why do they include these ics and capacitor ?
http://www.instructables.com/id/Super-simple-high-power-LED-driver/?ALLSTEPS
A simple circuit for high power LED is a basic electrical circuit that connects a high power LED to a power source, such as a battery or power supply, and a resistor to control the flow of electricity. This circuit allows the LED to emit a bright and powerful light.
The main components needed for a simple circuit for high power LED are a high power LED, a power source (battery or power supply), and a resistor. Optional components may include switches and capacitors for added functionality.
To calculate the resistor value for a simple circuit for high power LED, you will need to know the forward voltage of the LED and the desired current. You can use Ohm's law (V=IR) to calculate the resistor value, or use an online LED resistor calculator for more accurate results.
No, a regular LED is not suitable for use in a high power LED circuit. High power LEDs have a higher forward voltage and current rating, and a regular LED may not be able to handle the power and may burn out. It is important to use a high power LED specifically designed for high power circuits.
To make a simple circuit for high power LED more energy efficient, you can use a pulse width modulation (PWM) dimmer circuit. This circuit rapidly turns the LED on and off, reducing the average amount of power used and making the LED appear dimmer while still emitting a bright light. Additionally, using a higher efficiency power source and selecting a more efficient LED can also help improve energy efficiency.