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Meter Counter Circuits
VU Meter Circuits
VU Meter Circuits
stereo audio vu meter circuit
vu meter schematic
vu meter using a lm3915 circuit diagram
LED current drive is regulated and programmable, eliminating the need for current limiting resistors. The IC contains an adjustable voltage reference and an accurate ten-step voltage divider.
vu meter em84
From all the existing tubes, for sure the most interesting ones are the indicator tubes. From the 1930 ²s when they were invented, they captivated the eyes with the greenish shimmering light, thus the Magic Eye term appeared. The magic eye tubes are just small CRT derivations, usually they also have a triode built-in, as an amplifier. I had...
building vu meter
Need to amplify the output of the iPod`s headphone jack would not be enough to provide the chip with a large enough signal to respond to, but this was because I had been researching three different chips. The LM3914 is a linearly calibrated device, so its output will change one-per-volt of the input. This could be a problem for low-voltage...
mixer and vu meter
The 10k resistors in question are R15, 17, 18, and 19 (R16 is somewhere else). Their purpose is to separate the input channels, because otherwise turning the volume control for one channel down to zero would also connect the output signal to ground, cutting out both channels as I discovered when I excluded them which breadboard testing). The origi
vu meter 1
It is a simple circuit of optical index of level of sound signals, adapted in various needs of user. It can be adapted in various levels of entry, regulated from trimmer TR1 (Level) - TR2 (Gain), then it is rectified by the D1-2 (cutting off of negative periods of signal-rectification) and drived to the main circuit of index, that it is constitute
vu meter 4
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..
vu meter 5 with uaa180
This circuit of measurement of level uses the UAA180 of SIEMENS and a circuit of rectification of precision, round the IC2B. The calibration has become in steps 3db from the one Led in the other, ensuring, a very good rate of precision, in the measurement of entering acoustic signals. The Led can be square, thus when they are placed the one by...
Stereo VU meter - 2 channel audio level meter
Stereo VU meter / 2 channel audio level meter using IC TA7666P. Volume level of each channel is displayed using 5 LEDs .This loudness meter uses minimum number of external componets..
5 LED VU meter circuit diagram using KA2284
This is a simple circuit diagram of 5-LED audio VU meter using IC KA2284/KA2285. The KA2284, KA2285 are monolithic integrated circuit. It is a logarithmic display driver IC. And it is Bar type display driver using 5-Dot LED. The KA2284/KA2285 has a wide range supply voltage capacity of 3. 5V-16V, but we recommend to use about a 12VDC power supply.
Audio VU Meter
This circuit uses two quad op-amps to form an eight LED audio level meter. The op-amp used in this particular circuit is the LM324. It is a popular IC and should be available from many parts stores. The 1K resistors in the circuit are essential so that the LED`s turn on at different audio levels. There is no reason why you can`t change these resis
Simple Stereo VU Meter
This project will indicate the volume level of the audio going to your speakers by lighting up LEDS. The LEDS can be any color so mix them up and really make it look good. The input of the circuit is connected to the speaker output of your audio amplifier. You want to build two identical units to indicate both right and left channels. The input...
LED VU meter circuit by transistor
The V.U. meter that works with the integrated amplifier circuit.The signal will sound, the audio amplifier circuit into VU meter circuit.And will show the level..
Lets to build many VU Meter circuits with LM3914
A VU Meter is used to display the power level of the audio, it also is beautiful. When you go to the electronic equipment store to buy the VU meter kit, with the assembly various parts on their own or the style ready to use. Most of us are using the IC-LM3914, because it is convenient, easy to modify in many form. Today I assemble a the...
Simple vu meter schematic
Expensive stereo is general often have VU meter come to and for help show max power the stereo not too much. For radio tape general plaything has will no VU Meter. I then think to seek Multi meter use can replace. By use Range 100uA and electronics equipment the other again. It have be Potentiometer 10KHZ for fine decorate the rapidity the value d
some mic preamp vu meter
5x10 vu meter
A nice schematic for an lm3915 VU meter. I have attempted to create a band pass filter in order to only input part of the audio frequency spectrum into the VU meter circuit, this is becuase I plan to have 5 of these circuits to make a spectrum analyser or w/e its called. I have not been able to work out the value for the capacitor marked C2 in...
lm 3915 vu meter
* This meter looked like it works well: YouTube - IndikG tor vybuzenG s LM3915 but the schematic is quite different. Google Translate If I followed that schematic, do you think everything would still work You should use a peak detector circuit at the input so that momentary peak voltages light the LEDs long enough to appear bright, instead of th
VU Meter 9 Leds
A Simple VU Meter using LM3914
This simple VU Meter may be used in variety of projects. Since real electro magnetic type VU Meters are no longer available or too expensive, I decided to make this one using LM3914 and 10 LEDs, which I can use in my other projects.
Audio VU meter 9 leds
Adding VU Meter to Dantimax thatmic preamp
Hi all, i`ve recently bought the dantimax thatmic pre amp and i was wondering if anyone could point me in the right direction to install a vu meter..
VU meter Dave Circuit Data 1
Case Modification - Stereo VU Meter
This is a quick how-to guide for making a stereo VU meter using the LM3915/LM3916. The LM 3916 is an integrated circuit (IC) that takes analog voltage levels and drives 10 LEDs, LCDs, or vacuum fluorescent displays to represent digital voltage levels just like a VU meter. The 2. 2 uF Tantalum Capacitor is only needed if your wires from the IC to t
Schmitt Trigger VU Meter
If you look carefully at the schematic you will notice the input is feed into the voltage divider. This is because the Schmitt Triggers all turn on a..
Vu meter stereo circuit
This simple circuit is based on the well-known integrated circuit LM3915. The main characteristic of this integrated circuit is its power to manage 10 LED-s (Light Emitting Diodes) in logarithmic scale with a difference between the 3dB LED-s, which it can turn on the slash or on the dot . The other integrated circuit, the CA3130 is in charge
8 stage led vu meter
vu meter circuit
VU meter circuit diagram composed of M3916
Frequency Meter Circuits
Ultrasonic distance finder circuit
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 measured. There are three main categories of distance measurement methods in use: a) By...
Simple Metal detector circuit with CD4030
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 find something potentially valuable, hidden a few centimeters below the soil. So many...
Fully automatic watering circuit for flower pots
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 circuit comes as a solution to this problem. Depending on humidity of the pot at...
Simple deep searching metal detector circuit
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 circuit of this metal detector, it is possible to detect a metal coin in depth of 90 to...
Sub-Harmonic Bass Converter for Electric Guitars
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, such as filtering or distortion. Instead, a frequency division system produces outputs...
Echo Depth Sounding Sonar for Boats
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 calibration of the rope. This arrangement still exists in some yachts. The big...
100W HiFi Audio Amplifier Circuit
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 supply must be symmetrical so that no electrolytic capacitors are needed at the outlet....
Plant-Pot Water Level Indicator Circuit
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. The circuit of the device is shown in Figure 2. The water detection is made from the bottom...
Analogue Sound Preasure dB-Meter Circuit
The best human ear can capture sounds from 20Hz to 20KHz. These limits are known to be the broadest that can exist. Normally the normal limits range from 100Hz to about 13KHz and depend on the age and health of the individual. We for our measurements and to have a good accuracy we will get the limits of 20Hz to 20KHz. A sound to be heard does...
DIY HV Variable Capacitor
DIY PMA Alternator Plans
Digital Signal Integrity