VU Meter Circuits
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A circuit of measurement of level based on a typical application of National. The circuit round the IC1 makes input adaptation and amplification with the trimmer TR1 [GAIN]. The circuit round the IC2 makes half-wave rectification of acoustic signal. With.... -
A peak level indicator when a signal exceeds a certain maximum value. It can be quite useful, for instance, with tape recorders, mixing consoles etc. One of the most important requirements of a peak level indicator is that it should respond to very short.... -
The circuit was designed to work with an audio power amplifier which operated off +18v-0v-18v power rails. The actual voltage used is not too critical except that the feedback is referred to the LED chain which itself is anchored to a +12v rail, hence the.... -
LM3914 Dot Bar Display Driver LM3914 is a monolithic integrated circuit that senses analog voltage levels and drives 20 Led stereo Vu Metre Devresi PCB Circuit LM3914 10 leds stereo vumeter circuit diagram of Eagle PCB drawing of eagle .. -
Hope, you follow my advice and hack your cheap USB speakers, to get nice ( pre-assembled ! ) analog front-end for this project. If not, than get your soldering iron to work, minimum two resistors and 1 cap would required, assuming you already have display.... -
OK, after having some fun with stereo version of the VU meter I described in my previous blog-post, now it`s time to do a serious stuff. Studio grade VU meter ! 24 steps, equallyspaced every 3 dB, covering Extra wide Dynamic Range from -63 up to +6 dB..... -
Circuit diagram is a very simple circuit-level indication, with 10 Led. Used a series of half-wave rectification of precision around IC2 TL071, with a single. LM3915 IC is used to control the led, as an indicator VU Meter. LM3915 can be controlled 10 led.. -
The circuit was designed to work with an audio power amplifier which operated off 18v-0v-18v power rails. The actual voltage used is not too critical except that the feedback is referred to the LED chain which itself is anchored to a 12v rail, hence the.... -
The circuit below uses two quad voltage comparators (LM339) to illuminate a series of 8 LEDs indicating volume level. Each of the 8 comparators is biased at increasing voltages set by the voltage divider so that the lower right LED comes on first when the.... -
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A very simple circuit of indication of level, with 10 Led. Is used the circuit of half-wave rectification of precision round the IC2, with gain one. With switch S1, we can select the indication of Led. The level of entry is 60 mV-1.25 V.. -
The circuit is placed parallel with the exit of power amplifier and us gives the level of signal ,from output. Changing resistance R1, in the input circuit, we adapt the indication of power, in the resistance of loudspeaker, that we use.. -
This is Circuit LM3914 LED VU Meter. use IC1-LM3914 and Transistor BC109C, By circuit will show level of audio signal(power Music) is dB in six level by LED... -
Here is vu meter analog circuit. The circuit is left connected to the line terminals of the amplifier. The VU meter is quite simple. T1 and T2 signal increase.. -
Here is VU meter 10 LED circuit, This simple LED VU meter has only a few parts but it is useful as an indicator for the sound. The circuit is built around an... -
This is a circuit schematic diagram for the VU meters. Circuit diagram is controlled by IC TL072. A measurement circuit according to the National general application. Around the input circuit IC1 to make adaptation and amplification of the trimmer TR1.... -
This circuit uses the measurement of SIEMENS and UAA180 circuit of rectification of accuracy, around IC2B TL072. Calibration has been a 3dB steps from one another LED, make sure, a very good level of precision, the measurement of acoustic signals entering..... -
The LED meter circuit is simpler and smaller than its analogue counterpart, and is very common in audio equipment. This circuit is based on LM3915 IC and uses the logarithmic version. This circuit is using a single IC and a few discrete components. The extra.... -
Circuit diagram is a very simple circuit-level indication, with 10 Led. Used a series of half-wave rectification of precision around IC2 TL071, with a single. LM3915 IC is used to control the led, as an indicator VU Meter. LM3915 can be controlled 10 led..... -
This circuit in below uses two quad voltage comparator using IC LM339 to illuminate a series of 8 LEDs indicating volume level. Each of the 8 comparators is biased at increasing voltages set by the voltage divider so that the lower right LED comes on first.... -
.gif "Audio Level Meter (VU Meter)")
This circuit uses just one IC and a very few number of external components. It displays the audio level in terms of 10 LEDs. The input voltage can vary from 12V to 20V, but suggested voltage is 12V. The LM3915 is a monolithic integrated circuit that senses.... -
The circuit was designed based on the operation of Siemens UAA180 as it functions as a LED driver for light band displays for measuring the level of audio signals... -
I have been working on driving an analog VU meter based on the sound going out the Raspberry Pi`s audio outputs. This now works! The music [1] is playing from a Raspberry Pi, with software running on the Pi digitally sampling the peak output audio level and.... -
VU meter or a volume unit meter is a device used for indicating the music volume output from an amplifier or a loudspeaker system. It may be also considered as a device for displaying the PMPO of the amplifier at a particular volume setting. Though the unit....
New Circuits
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This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of.... -
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is.... -
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to.... -
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This.... -
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the.... -
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,.... -
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the.... -
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power.... -
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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