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Audio Level Indicator Circuit Diagram using LM339 ...
https://electronicsarea.com/audio-level-indicator-using-lm339/
Audio level indicator using LM339. This audio level indicator using LM339 circuit is very interesting, since it allows us to visualize the intensity of the audio level by connecting this circuit to the input of a speaker. The LM339 integrated circuit has 4 comparators that operate completely independently, but share the same voltage source.
Audio VU/Sound Level Meter with LM339 - Electronics-Lab.com
https://www.electronics-lab.com/project/audio-vu-sound-level-meter-with-lm339/
Audio VU/Sound Level Meter with LM339. This is an “ Audio VU Meter ” or “ Sound Level Meter ”, it is a general-purpose bar-graph Audio VU meter designed for fun projects. All you need is to hook up one wire to the output of the audio amplifier’s speaker pin along with GND and see the magic. The response of the circuit is very fast and ...
LM339 data sheet, product information and support | …
https://www.ti.com/product/LM339
The LM339 and LM339A devices are characterized for operation from 0°C to 70°C. The LM2901, LM2901AV, and LM2901V devices are characterized for operation from –40°C to +125°C. The LMx39x and the LM2901x devices consist of four independent voltage comparators that are designed to operate from a single power supply over a wide range of ...
LM339 - Single Supply Quad Comparators
https://www.onsemi.com/pdf/datasheet/lm339-d.pdf
LM339, LM339E, LM239, LM2901, LM2901E, LM2901V, NCV2901, MC3302 www.onsemi.com 2 MAXIMUM RATINGS Rating Symbol Value Unit Power Supply Voltage LM239/LM339, E/LM2901, E, V MC3302 VCC +36 or ±18 +30 or ±15 Vdc Input Differential Voltage Range LM239/LM339, E/LM2901, E, V MC3302 VIDR 36 30 Vdc Input Common Mode Voltage Range VICMR −0.3 to 36 …
How to Make IC LM339 Circuits - Homemade Circuit …
https://www.homemade-circuits.com/how-to-make-ic-lm339-circuits/
An LM339 inverting comparator circuit diagram can be witnessed in the figure above. Here pin5 of the IC is fixed with a reference voltage of 3 V by the voltage divider formed by R1 and R2. As long as the potential at pin 4 of the IC is higher than 3 volts, the output of the IC stays low, but the moment it goes below below 3 volts, the output ...
How to Build an LM339 Quad Voltage Comparator Circuit
http://www.learningaboutelectronics.com/Articles/LM339-quad-voltage-comparator-circuit.php
The LM339 is a quad op amp comparator. This means it is made up of 4 independent op amps. This means that up to 4 different input values can be compared. A comparator works by a simple concept. Each op amp of a comparator has 2 inputs, a inverting input and a noninverting input. If the inverting input voltage is greater than the noninverting ...
Lm339 LED voltage meter comparing opamp - YouTube
https://www.youtube.com/watch?v=fMWvoz5N-j8
This project show you how to compare lm339 in/out pins and turn on leds one by one when the compare result is true. and when false turn off LED for each in/o...
Can a comparator (LM393) be used as an amplifier ...
https://electronics.stackexchange.com/questions/253109/can-a-comparator-lm393-be-used-as-an-amplifier
An LM393 IS an amplifier but it is designed to be used as a comparator and it therefore is designed to have a very high gain and an open collector output. You could load the open collector output with a resistor to supply and apply feedback (to reduce the gain) so that it becomes a linear amplifier.
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