Varying frequency of an LED drive circuit

In summary, the conversation discusses the possibility of using audio signal frequencies to control the positive connection on a 12v dc led circuit. The desired effect is for the LEDs to flicker in response to the low-end frequencies of the audio signal while maintaining full operating brightness. The suggestion is to use an operational amplifier configuration with appropriate peripheral components to achieve this effect.
  • #1
Jordan ray
2
0
Greetings. How would I go about finding a way to use an audio signals frequencies to control the positive connection on a 12v dc led circuit? In other words, have the visual effects you get hooking up a dc led strip to an amplifier, but instead controlling the dc positive output to the strip from the constant 12v power supply using an ac audio signal as it's control? Thanks
 
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  • #2
Jordan ray said:
Greetings. How would I go about finding a way to use an audio signals frequencies to control the positive connection on a 12v dc led circuit? In other words, have the visual effects you get hooking up a dc led strip to an amplifier, but instead controlling the dc positive output to the strip from the constant 12v power supply using an ac audio signal as it's control? Thanks
Welcome to the PF.

What do you want the LED brightness to do in response to the audio? Get brighter with louder audio? Flicker with the audio sounds? Show a bargraph of loudness as the audio gets louder and softer?
 
  • #3
I would first consider Using a operational amplifier config. As for our good
friend berkman mentioned for any of the 3 mentioned needed effects, using of course the appropriate peripheral outboarded components
 
  • #4
I want them to retain full operating brightness but flicker at the rate the low end frequency it's receiving via audio signal
 
  • #5
So you'll want to select the low-end frequencies (filter circuit), rectify and smooth, and use the result to vary the current supplied to your LEDs. This sort of thing was (still is?) a popular hobby circuit. Google: "color organ circuit".
 
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Related to Varying frequency of an LED drive circuit

1. How does the frequency of an LED drive circuit affect its performance?

The frequency of an LED drive circuit determines how often the LED turns on and off, which directly affects its brightness and energy consumption. A higher frequency can result in a brighter and more efficient LED, while a lower frequency may lead to a dimmer and less efficient LED.

2. Can the frequency of an LED drive circuit be adjusted?

Yes, the frequency of an LED drive circuit can be adjusted by changing the values of the components in the circuit such as resistors, capacitors, and inductors. This allows for customization of the LED's brightness and energy consumption based on specific needs.

3. What is the ideal frequency for an LED drive circuit?

The ideal frequency for an LED drive circuit depends on various factors such as the type of LED, power source, and desired brightness. Generally, frequencies in the range of 50-500 Hz are suitable for most LEDs, but it is best to consult the LED's datasheet for specific recommendations.

4. How does the frequency of an LED drive circuit impact its lifespan?

The frequency of an LED drive circuit can impact its lifespan in two ways. A higher frequency may result in more frequent on/off cycles, which can cause wear and tear on the LED, potentially reducing its lifespan. On the other hand, a lower frequency can lead to a longer lifespan, but the LED may not be as bright or efficient.

5. Can the frequency of an LED drive circuit be controlled remotely?

Yes, the frequency of an LED drive circuit can be controlled remotely using various methods such as remote control, Bluetooth, or Wi-Fi. This allows for convenient and flexible adjustments to the LED's brightness without physically accessing the circuit.

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