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microphone Neumann UM 57
The Neumann/Gefell UM 57 was a large-diaphragm tube condenser microphone manufactured by the Neumann company of Gefell, Germany, currently known as Microtech-Gefell. The mic used the Gefell company`s famous M7 capsule. This was a dual-diaphragm, center-terminated capsule with a PVC (plastic) diaphragm. It supported three polar patterns via a switc
microphone Oktava MK 219
The MK-219 is a popular large-diaphragm condenser, designed and produced in JSC Oktava`s factory in Tula, Russia. Since its release (in the West) in 1994, it has had a reputation of offering a great value for the price, which at the time was over $500. These mics regularly sell on Ebay for $80-$100 today. Rumour has it that the large diaphragm cap
microphone Oktava MK 319
The MK-319 is a fixed cardioid-pattern, large-diaphragm condenser microphone. The capsule assembly is the same as the MK-219; the primary differences between the models are: The diaphragm is gold sputtered teflon, mounted to a center-terminated capsule design. The rear diaphragm is not sputtered. Both sides of the capsule are covered by a resonato
microphone Sennheiser MKH 415 T
The Sennheiser MKH 415 T is a medium shotgun microphone, powered by the 12VDC A-B standard (aka DIN 45 595, aka T power). It was the forerunner to the popular MKH 416, which is still made. According to Sennheiser lore, the original MKH 415 prototype was longer, causing complaints from broadcast engineers that microphone operators would have to
microphone beyerdynamic TG X 50 Mk II
The Mk II was a second-generation version of the TG X 50. Both were dynamic microphones intended for bass instruments and kick drums. The primary difference between the two versions was the introduction of a passive EQ filter in the Mk II. Note that the circuit schematic (Schaltbild ) in the cutsheet linked from the right sidebar is incorrect
pre amp condenser microphone circuit
preamplifier for ecm microphone
Both transistors should be low noise types. In the original circuit, is used BC650C which is an ultra low noise device. These transistors are now hard to find but BC549C or BC109C are a good replacement. The circuit is self stabilizing and will set its quiescent point at roughly half the supply voltage at the emitter of Q2. This allows maximum out
microphone computer circuit schematic
The sound card for a PC generally has a microphone input, speaker output and sometimes line inputs and outputs. The mic input is designed for dynamic microphones only in impedance range of 200 to 600 ohms. Lazar has adapted the sound card to use a common electret microphone using this circuit. He has made a composite amplifier using two transistor
nokia 6630 microphone problem picture
Microphone problem on Nokia 6630 usually caused by several reason, damaged microphone, broken path or line, and damaged the UEM IC. If the problem caused by the broken path in the microphone circuit, we need the Nokia 6630 schematic diagram to find the broken line and reconnect it using the thin wire. Here, mobile repair provide some pictures...
diy microphone preamp
electret microphone amplifier circuit diagram
low noise balanced microphone preamp
microphone circuit with tone control
5500MP tube condenser diy microphone
Phantom Powered Microphones
These require power to work. Sometimes, that`s a battery you put into the mic. Sometimes it`s a separate dedicated power supply with a special multi-pin cable. But most often these microphones use phantom power. This is power deliveredby a mixer or console, which uses the same cable that the audio comes back on. Hence, the idea phantom because...
portable microphone preamplifier
This circuit is mainly intended to provide common home stereo amplifiers with a microphone input. The battery supply is a good compromise: in this manner the input circuit is free from mains low frequency hum pick-up and connection to the amplifier is more simple, due to the absence of mains cable and power supply..
portable microphone preamplifier circuit schematic
This circuit is mainly intended to provide common home stereo amplifiers with a microphone input. The battery supply is a good compromise: in this manner the input circuit is free from mains low frequency hum pick-up and connection to the amplifier is more simple, due to the absence of mains cable and power supply. Using a stereo microphone the...
quality stereo wireless microphone or audio link
This stereo FM wireless microphone also makes a great quality audio link. We tested it to beyond 50 meters and it was rock solid. It s certainly not the first wireless microphone we ve ever published but this one is a little different. It s stereo, providing surprisingly good quality sound. Second, it has a really good range. We tested it at...
microphone preamp circuit
Here is a schematic of a very sensitive microphone preamp circuit, which can be used to increase gain of microphone or boost the audio signals coming from microphone. The circuit is very simple contains only few components and can be assembled in few minutes if all parts are available. This is a versatile mic preamp circuit and can be used for man
sensitive microphone circuit
The figure below shows a schematic of a very interesting sensitive mic circuit which will boost faint sounds from distance. The circuit is quite sensitive and provides good gain to weak audio signals..
Condenser Microphone Amplifier Schematic using BEL 1895 IC
Here I will show you an audio amplifier circuit that can be used for walkie talkies, low power transmitters, and packet radio receivers. A condenser mic audio amplifier gives good quality audio of 0. 5 watts at 3 volts. Here we are going to make use of BEL 1895 (Bharat Electronics Limited 1895) audio amplifier IC which is also a noise free amplifi
Simple condenser microphone mini audio amplifier circuit schematic
This is a very useful and simple circuit diagram for amplifying weak signal from a capacitive condenser microphone. You can use this circuit for sound sensing applications and some automatic robotic sensors. We have already posted an efficient audio amplifier circuit using 1895 IC, it is somewhat complicated and is suitable for very sensitive appl
3 input microphone preamplifier
The circuit given here is of a three input mic mixer cum preamplifier using the IC LM348. The LM348 is a high gain, internally compensated quad operational amplifier with a class AB output stage. The IC has very low input supply current drain (0. 6mA/ opamp) and operates from a dual power supply. Out of the four op-amps inside the IC LM348, IC1a, I
Speaker to microphone converter circuit
This circuit is a simple approach for converting a loud speaker into a microphone. When the sound waves fall on the diaphragm of a speaker, there will be fluctuations in the coil and there will be a small proportional induced voltage. Usually this induced voltage is very low in magnitude and useless. Here in the circuit the low voltage is amplifie
LMV1090 Dual Input Far Field Noise Suppression Microphone Amplifier
Figure 1 shows the schematic for a universal input, 7. 6 V, 700 mA CV/CC power supply for LED Driver applications, using the LinkSwitch-II product LNK606PG in a‚ flyback con guration. The LNK606PG (U1) combines a power switching device, Oscillator CV/CC control engine, and startup and protection functions in one IC. Diodes D1 through D4 rectify
Microphone preamplifier with audio compressor
Speaker Microphone circuit diagrams
This circuits allows you to use a cheap loudspeaker as a microphone. Sound waves reaching the speaker cone cause fluctuations in the voice coil. The voice coil moving in the speakers magnetic field will produce a small electrical signal. The circuit is designed to be used with an operating voltage between 6 and 12 volts dc. The first transistor op
find the output of capacitor microphone in theory or augur
Hello how can find the output of capacitor microphone in theory or augur it without test in? for example in these circuits what is the output of each..
Stereo Mixer for Microphone with 2 Channels
The circuit was designed to provide 2 channels on a stereo mixer that will be used for microphones while having a crossfader operation. NE5532 an intern..
48V Phantom (Microphone) Power Supply
48 V â€˜phantom powering has become the standard for professional condenser microphones. The supply (or rather bias) voltage is applied over both wires of..
Balanced Microphone Amplifier
We published a design for a stereo microphone preamplifier with balanced inputs and a phantom power supply. The heart of this circuit was a special Analog..
Audio Filters Circuits
Audio Amplifier Circuits
Audio Oscillator Circuits
Audio Mixer Circuits
Audio Equalizer Circuits
Audio Tone Balance Circuits
Beeper Buzzer Circuits
Vacuum-Tube Valves Circuits
Musical & Effects 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