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Tip31 + LEDs Glowing Tube : 6 Steps - Instructables
https://www.instructables.com/Tip31-LEDs-glowing-tube/
A battery runs through a transistor to LEDs with an audio signal inputted. The tip31 transistor takes the power from the battery and holds it. Then the transistor which also has the 3.5mm audio jack connected waits for the signal to allow the charge to pass through the LEDs. The LEDs can either be ran through a parallel circuit, or a series.
TIP31C Sound reactive circuit on 5m LED strip - YouTube
https://www.youtube.com/watch?v=gB1tmibDRkw
using the TIP31 sound to LED circuit http://www.instructables.com/id/Sound-Reactive-LEDs-1/?ALLSTEPS Although I am not using the opAmps circuits he's using, ...
Amplifying Audio signal for use with TIP31 power ...
https://forum.arduino.cc/t/amplifying-audio-signal-for-use-with-tip31-power-transistor-and-led-array/227068
I have an analog circuit that takes audio input and amplifies it to 0v-5v to power an LED array and has a potentiometer to reduce the gain. I am using 5v because my power source is a portable USB battery. Anyway, how do I amplify the audio so that weaker audio signals can light up the LED array better? I have on hand some 2N3904 transistors and a couple of TL082 …
Driving LEDs from audio signal - Electrical Engineering ...
https://electronics.stackexchange.com/questions/36423/driving-leds-from-audio-signal
I suggest your original p/n the TIP31 is far better than the BC337-40 and here's why. The LEDs in your link are 1 Watt standard type LEDs that are typically rated in the 350 mA range. The BC337 has a Vce of 0.9V and hFE of 80 @25C @ 350 mA meaning the power rating (250mW) of the part is greatly exceeded and it would burn out with approximately 0.9V*0.35A drop (315 mW).
Tip31 LED strip project - Electronics Forum (Circuits ...
https://www.electro-tech-online.com/threads/help-tip31-led-strip-project.135798/
1) A series base resistor to limit the transistor base current to prevent the audio power amplifier and TIP31 transistor from blowing up. 2) A diode from base to emitter to prevent the reverse-bias emitter-base voltage from exceeding its maximum allowed voltage of only 5V. 3) A current-limiting resistor in series with the LEDs to prevent them ...
Introduction to TIP31 - The Engineering Projects
https://www.theengineeringprojects.com/2019/07/introduction-to-tip31.html
In today’s tutorial, we are gonna have a look at detailed Introduction to TIP31. The TIP31 is a typical NPN transistor which is frequently cast-off for intermediate power submissions. This (BJT) is a three (3) points expedient which works for intensification or swapping submissions. It is designed by linking three units of semiconductors with alternatively …
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