Audio Amplifier Circuits

After the graphic equalizers are universally applied, and the emergence of a new kind of equalizer, called a parametric equalizer that amount of EQ, or from the internal circui..

Although the IC has been replaced to a large extent this circuit, the flexibility of the circuit design of discrete devices still make it practical. The parts are readily avail..

Although the TDA7293 longer beautiful, but in fact excellent strength, still have to tell you about, for enthusiasts may be a review. TDA7293 is ST (SGS-THOMSON) company produc..

Always wanted to do morning exercise machine, also suffering no single power can not find high-power amplifier, as morning exercise machine is battery powered, so thinking abou..

Amplifier circuit of this paper is to introduce a floating power supply, the purpose is to increase the output power, the amplifier output power with only the final stage ampli..

Amplifier circuit shown in Figure 2-25. It has the following features: (1) promote the use of a class 6N11 tube for parallel push-pull amplification entire term, high-frequency..

As shown for the low-frequency output 7W power amplifier circuit. The circuit uses a FET input type operational amplifier LF356 integrated as a voltage amplification. The class..

As shown in FIG To eliminate hum instrument amplifier circuit. FIG amplifier stage A1, A2 selected integrated operational amplifier INA101, followed by level A3 selection INA10..

As shown in FIG constitute grounds PGA103 programmable gain instrumentation amplifier. This circuit uses the PGA205 and PGA103 cascading manner, the total gain of the amplifier..

As shown in FIG grounds PGA203 and isolation amplifier IS0102 constitute isolated programmable gain instrumentation amplifier circuit. PGA203 then amplified by the input signal..

As shown in FIG simple audio amplifier circuit. Using the integrated op-amp configuration of audio amplifier is stable, easy to negative feedback, so it is easy to get equaliza..

As shown in FIG source constituted by PGA203 programmable instrumentation amplifier suspended. Because the input signal is applied to PCA203 twisted pair inputs, so in suspensi..

As shown in Figure 3-30 to promote the use of IC LA4425 stage power amplifier, a pair of power module 1490 as a push-pull output, since the impedance converter, whether the spe..

As shown, the use of the operational amplifier A for audio preamplifier circuit. The advantage is small size, low noise, low power consumption, good consistency. A operational ..

As the main part of the circuit has been achieved Ic! Of bulk components are primarily large number of capacitors. Internal circuit shown, the output level from the A t, Tr. Co..

As we all know, from the amplifier output stage to the previous stage, although a large loop feedback to improve frequency response and harmonic distortion indicators amplifier..

Audio AGC can keep track, monitor audio preamplifier output signal level when the input signal increases, AGC circuit automatically reduces the gain of the amplifier; when the ..

Audio power amplifier circuit from LA4112 integrated power amplifier and other components of FIG. ..

Based CNC programming gain instrumentation amplifier PGA202/203 circuit diagram as follows: ..

Because all of the resistance values are equal, so the Cantonese OP amplifier 4 magnification number (A) is equal to l, but according to need, by selecting small exposed the ug..

By ISO120 and INA105 instrumentation amplifier as shown, multiplexer constituted 600V battery system battery monitoring circuit. This circuit 50 in series 12V battery (ie, the ..

By an integrated power amplifier TDA2040 (lC) can also form OCL power amplifier (OCL meaning is no output capacitor power amplifier). Circuit shown in Figure 10-10, which uses ..

By the pLPC1342V and NE (two company names and fever on the tube amplifier circuit 2SA1227A 2SC2987A composed of maximum output power up to 120W, the cutoff frequency up to 500..

Chinas national conditions, general living room area of more than twenty square meters, and usually doubles as a bedroom or living room listening room. If the speaker sensitivi..

Circuit shown in Figure 240 of the circuit structure is very simple, with only four transistors to achieve circuit from input voltage put large, inverted, and promote the whole..

Closed loop amplification circuit and by RL and. Decided, when magnification is 100 times (40dB), the input signal is high, in order to ensure a stable circuit work for, people..

Chu Moy designed a very popular headphone amplifier that`s easy to build, and it can be built small enough to fit in a pocket, power supply and all. It`s powerful enough to drive very inefficient headphones to thunderous volumes from even weak sources, and....

The simplified circuit [Fig.2] shows that each sub-amplifier consists of two voltage gain stages. The first stage consists of a complementary two stage common emitter [Q1-7] whose gain is about x2.3. The second stage is a current mirror stage [Q13-14] which....

This simple audio power amplifier was originally designed for a circuit board workshop, conducted by the OSU IEEE Student Group. At the workshop, 20 participants each constructed this amplifier, by etching and drilling the single sided circuit board,....

A medium power amplifier that is characterized by a lot of good sound quality, but simultaneously is very simple in the construction. Him uses, enough time in my active loudspeakers. In his output stage exist the very good FET transistors, technology....

An amplifier to drive low to medium impedance headphones built using discrete components. Both halves of the circuit are identical. Both inputs have a dc path to ground via the input 47k control which should be a dual log type potentiometer. The balance....

Audio-taper pot, R1, adjusts input level into two LM386 amplifier chips. The LM386 is a low-voltage audio power amplifier, designed to operate on 4V to 12V. It has an internal 15K feedback resistor between pins 1 and 5 which would set the gain at 20 (26dB)...