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Karaoke with integrated echo circuit
This fast circuit is compatible with any amplifier that has a line or high-level input (radio, CD) that allows you to mix the signals from a microphone with the music source of your choice also add sound effects to your voice, which are adjustable in depth and duration. The circuit is tested and works perfectly.
Direct Box (instant music recording instrument for Musicians)
The sound is taken from a musical instrument in two different ways. Through a microphone that is placed in place by the instrument amplifier or via a direct connection between the instrument and the mixing console via a direct-box device. The benefits of direct-box versus microphone is that each microphone added to the scene is an additional...
Hi-Fi Microphone Preamplifier circuit
This microphone preamplifier circuit strengthens the acoustic signal of a mobile coil microphone or MC (Moving Coil) with a sensitivity of 150Î¼V at the line level. In this construction this technique is not used because the noise produced is not important to affect the end result. The sequence of the electronic data link, used to drive the...
Electronic switching preamplifier
Electronic switch is a multifunctional preamplifier. It consists of five-way touch electronic switch, high-speed DC servo RIAA ultralow distortion amplifier. It can be volume,
Vanda F-9500A preamplifier b
Figure 3-2 (b) is the second half of the circuit, VT17 ~ VT31 group into power amplifiers, pre-amplifiers, and it is a structure composed of exactly the same oIC2 its zero serv
There are preamplifier with four inputs
Figure 3-25 is a hybrid having four input preamplifier, in the circuit, cZ1, cz, C23 and cz4 respectively, can enter the microphone, line, phono and crystal head signal. Quad c
Magnetic Cartridge Preamplifier (LT1028CN8)
A high performance op-amp that sets a new standard of excellence in noise performance only 0.9nV/Hz with low source resistances. Total harmonic distortion is less than 0.01%. The op-amp is suitable for use in high quality audio, low noise frequency synthesizers, infrared detectors etc.
Hi-Fi stereo Preamplifier with tone controls
The circuit is based on the known chip TDA1524, which is an integrated control Volume, Bass, treble, and Balance. These arrangements are made through 4 potentiometers (P5-P8) with trend. The integrated circuit IC1, to run the needed very few external components. The potentiometer PI-P4 are used to compensate any tolerances POSTS components that...
Preamplifier and high-to-low impedance converter
Thiscircuit matches the very high impedance of ceramic cartridges, unity gain, and low impedance output. By "loading" the cartridge with a 2M2 input resistance, the cartridge characteristics are such as to quite closely compensate for the RIAA recording curve.
General purpose preamplifier
Not much can be said about how the LM382 works as most of the circuitry is contained within the IC. Most of the frequency-determining components are on the chipâ€”only the capacitors are mounted externally
Magnetic pickup phono preamplifier
This preamplifier provides proper loading ratio of better than - 70 dB (referenced to 10 to a reluctance phono cartridge. It provides mV input at 1 kHz) and has a dynamic range of approximately 35 dB of gain at 1 kHz (2 mV 84 dB (referenced to 1 kHz). The feedback input for 100 mV output)
Choosing de rather than ac coupling can reduce much of the noise associated with preamplifiers for a magnetic reading head, particularly in the low frequencies. The LM1897 eliminates the need for the capacitor that usually ac couples the read head to the preamplifier input. The read head itself has a small resistance, typically 50 0, and so...
This simple stereo amplifier uses a National LM3871C. The pin numbers in parentheses are for one channel, and those not in parentheses are for the other channel. The supply voltage can be +9 to +30 Vdc at about 10 mA. The output voltage swing is about Vee-2 V pk-pk.
Preamplifier For Magnetic Phono Cartridges
This amplifier is intended to be added to preamplifiers that have no phono input. Such a phono i
Low-Noise Audio Preamp
A low-noise LT1115 (Linear Technology, Inc.) op amp is coupled to a class-A buffer amplifier to produce a variable g
This amplifier is useful for audio and video applications. Gain is set by Rf and the voltage gain of this amplifier
In many oscilloscopes, the most sensitive range is 2 to 5 mV, although it is often possible to improve this to 1 to 2 m
The LM3909 is configured so that the frequency of oscillation is dependent on a single RC timing circuit, which consists of
The input impedance is the value of potentiometer Rl. If your instrument has extra-deep bass, change capacitor Cl to 0.5 mF. What appears to be an extra part in the feedback loop is a brightening tone control. The basic feedback from the op amp's output (pin 6) to the inverting input (pin 2) consists of resistor R7, and the series connection of...
Mike preamp with tone control
The LM318 op amp is operated as a standard non-inverting amplifier. Resistor Rl (47 k ohm) provides an input path to ground for the bias current of the non-inverting input. The combination of R2 (560 ohm) and C2 (10 /iF) provides a frequency roll-off below 30 Hz. At 30 Hz and above the gain is relatively flat at about 50 dB, set by the ratio...
Low distortion audio gain limiter
The level at which the limiter kicks in audio can be adjusted with the selector knob LIMIT LEVEL. When this level is exceeded, the output of the half-LIMITING detector of the op-amp (used as a comparator) turns the LED causes the resistance of the photoresistor to decline rapidly. It is in tum causes the gain of Ie half LIMITED op-amp to...
RIAA preamplifier CA3410
This circuit has read the RIAA equalization, tone controls, and adequate gain to drive most power amplifiers conunercial by using CA3410 op amp BiMOS. Total harmonic distortion, pushed to provide an output of 6-V, is less than 0.035% in audio-frequency range from 150 Hz to 40 kHz.
Low-noise preamplifier circuit
Low-noise preamplifier circuit It shows a typical low-noise preamplifier circuit, an amplifier may be used to signal
And put the intermodal server preamplifier circuit diagram
Adopt and put the intermodal servo preamplifier circuit as shown, the circuit is 115V, 60Hz servo motor amplifier provides a differential output. An op amp inverting connection
TV preamplifier circuit
Amp circuit as shown in the pre-television. The pre-amplifier circuit is Qioi and other parts of xlol. Q [ol and biasing element is configured as a common emitter IF amplifier,
OPA37 low-noise preamplifier
As shown for the OPA37 constitute a low-noise preamplifier. Input signal is applied OPA37-inverting input (pin 3), circuit RL, CL is the load impedance electromagnetic pickups,
BA328 stereo preamplifier circuit
BA328 with Dual preamplifier circuit having fewer external components, easy installation features, single 8-pin DIP package. Circuit characteristics are as follows: wide operat
Double transistor low noise of the preamplifier measured by high
Bong ordinary differential amplifier circuit and the difference circuit is that it has made a voltage-current conversion circuit rPl constituted with R. And Rl o of the OP ampl
Use opa37 composed of the head preamplifier circuit diagram
Circuit 90s common recorder head amplifier circuit, the choice of ultra low noise precision op amp OPA37 pre-formed head amplifier. Circuit can provide a standard NAB equalizat
Low noise preamplifier circuit diagram of the speech
Circuit schematic as shown below, using the MC2830 voice circuit is formed. Traditional voice circuit can not distinguish between speech and noise of the input signal. In a noi
Circuit shown in Figure 3-10. This is a multi-function input with a preamplifier, including the tuner input, a magnetic tape playback input, magnetic phono input and phono equa
High-quality low-noise preamplifier
Circuit shown in Figure 3-8. Input signal through a low pass filter to the input of the differential amplifier FET former composition are evaluated once preamplifier output of
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...
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