The vu-meter is distinguished in two categories, those with the needle instruments and those with the led column. Whether it is a tube amplifier or integrated amplifier, a vu-meter sound level meter is required. Today there are enough chips that do this work....
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....
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....
The TDA 7294 of T-MICROELECTRONICS is a monolithic integrated circuit in a "Multiwatt 15" shell designed in principle to be used in amplifiers or class AB in high-fidelity applications such as stereo, active speakers, television receivers, and more. Thanks....
These two amplifiers are of very good quality, simple and economical in their manufacture. They have two inputs for a 4mV (500KΩ) sensitivity microphone and an input for any 200mV (1MΩ) sound source, that is, the first input is for speech and the second one....
This transmitter with a good antenna and under proper conditions of use may have a range of more than 45km. The configuration is made by the rise of the output lamp, which makes it advantageous as regards the fidelity of the emitted signal. The 6V6 lamp is....
The simplicity of this transmitter compared to its very high performance makes it very interesting. Its output power is about 30 W and its range under normal conditions, with proper antenna and handling, reaches 30 km. The oscillator is the PL 84 which....
This transmitter, as shown in the drawing, consists of a 6V6 as an oscillator, then the signal excites an 807 which acts as a buffer. The final step consists of two 807 in Push-Pull. The amplifier consists of three in series double-triodes ECC83 and finally....
This transmitter consists of 5 in total bulbs. 6L6 works as an oscillator. Subsequently the oscillation is guided to the guide grid of 807 which acts as the ultimate amplifier and is the transmitter output lamp. The amplifier consists of the ECC83....
Is this a transmitter? Medium-wave short-wave consists of three transistors. The transistor AF115, along with the rest of its circuitry, is the oscillator of the device. The circuit of the two OC72 is the low-frequency amplifier (modulator), which forms the....
The output of this modulator consists of two 6AQ5 lamps in a PUSH-PULL arrangement with a maximum output of 15W. 6C4 is used as a reversing lamp. The pre-amplifier role is played by the double-stage ESC83. The potentiometer R1 performs voice volume adjusters....
In this circuit, the wearer assembly consists of only one lamp, 6V6 or 6L6, which acts as an oscillator and as an output amplifier at the same time. Coil L1 is the medium wave oscillation coil. Of 6SA7. The coil L2 consists of 50 spools wrapped on a cylinder....
It consists essentially of three stages and gives the antenna a power of 300 WATT, provided it is properly tuned. The first tier is an oscillator that has an oscillating coil L1 that will be required by the market as a 6SA7 coil. The coils L2 and L3 consist....
This transmitter consists of three stages. The step of the oscillator with the 6L6 lamp, the amplifier isolator with the lamp 807 and the final stage of the transmitter with the 811 lamp. The coil L1 is requested by the market as a coil of the 6SA7. The....
For our strong construction with the two 807 we do not need words. We all know the performance of such a machine. In this construction we have the peculiarity of high upward tension and independent coupling. On the output lamps, resulting in the output power....
D2025 Dual audio power amplifier circuit D2025 is a stereo audio power amplifier integrated circuits, power amplifier for use DIP16 package applicable to all types of portable ..
Figure (a) shows the output amplifier circuit 170W at 4 loads; LM4651 is a former circuit class D amplifier, a 28-pin DIP package, the internal equivalent circuit is shown in (..
Fans are hoping to make a high-quality amplifier, but the most outstanding publications published on the circuit, they often too complex and difficult to start 6 This article d..
FIG automatically shut down by the circuit is a MOS FET to achieve. When the headset is inserted, the contact off, MOS tube grid connected high, the tube guide pass., feet grou..
FIG dual-channel circuit LM378 dual operational amplifier composed of Europe. Supply voltage Ub 24V and 8 ohm load (or 16 Euro), the output power per channel 4W. Circuit with i..
FIG OCL power amplifier circuit is an integrated circuit. Circuit IC1 is an integrated circuit, its internal circuit configuration is substantially similar to the integrated ci..
Due to the rapid development of integrated circuit technology, an integrated circuit amplifier also come out in large numbers, its technology and performance indicators have re..
Electronic tube amplifier lovers started his art that simple, excellent single-ended Class A circuit should be the first choice. Single-ended Class A tube amp with a mellow, sw..
Figure 4-20 is HAD250A-3 active speakers and amplifier circuit integrated amplifier circuit LM3886 thereof. The circuit uses 25V power supply, output power up to 50w 2, to meet..
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..
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..
Figure 1-97 is a ten-band equalizer circuit with a first connection thereof. FIG lC is the utility voltage amplifier, R7, respectively, equivalent to the island in Fig 1-92 Rl,..
Figure 1-98 is a double five-band equalizer circuit composed of a second connection. FIG IC1 IC14 respectively equalizer per channel utility voltage amplifier; ICLl, IC24, IC 2..
Figure 1-99 with a five-band equalizer equalizer circuit TA7796 specific integrated circuit composed of the circuit in the public electricity voltage amplifier, an analog induc..
Figure 3-16 is a low-noise preamplifier equalizing HA12017 consisting playback circuit, the circuit R3, R4 and C4, in line with standard maggots balanced network. The gain stag..
Figure 4-33 and using substantially the same circuit configuration, the common amplifier and analog inductive circuits are provided, but its analog inductive circuit transistor..
FIG is a decay feedback tone control circuit. In the tone control circuit both have anti-attenuation Fed action. So high, in the end it is to enhance or attenuate the bass, and..