100W HiFi Audio Amplifier Circuit – Circuit Schematic
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 a...
Valve/Tube Low Frequency amplifier 30W – Circuit Schematic
Valve/Tube Low Frequency amplifier 30W
The amplifier of this design is 30 Watt and is suitable for microphone-inducing. It accepts a crystalline microphone and can be used for speeches, lectures, as ...
15W Valve Modulator Amplifier circuit – Circuit Schematic
15W Valve Modulator Amplifier circuit
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-amplif...
Valve Tube Audio/Modulation Amplifiers 15W and 35W – Circuit Schematic
Valve Tube Audio/Modulation Amplifiers 15W and 35W
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...
1W UHF Linear Amplifier with BLW33 – Circuit Schematic
1W UHF Linear Amplifier with BLW33
This circuit is an amplifier for small transmitters operating in the UHF band, specifically in the 450-800MHz range. The amplifier works in class A and we used ...
8W Amplifier with TDA2003 circuit – Circuit Schematic
8W Amplifier with TDA2003 circuit
Many times a small amplifier is needed to meet the needs of small spaces. This amplifier can be either mono or stereo, with this circuitry you can comfortably d...
FM Linear Amplifier 400mW – Circuit Schematic
FM Linear Amplifier 400mW
This amplifier is intended for amplifying low signals from oscillators in the FM band. It does not have frequency regulators with variable capacitors and coils,...
50 Watt Hi-Fi power amplifier circuit – Circuit Schematic
50 Watt Hi-Fi power amplifier circuit
SGS Thomson's integrated TDA7294 is a high-frequency acoustic power amplifier, with true high-precision specifications, suited for all relevant applications. It...
Hi-Fi Microphone Preamplifier circuit – Circuit Schematic
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 150μV at the line ...
High Fidelity Valve audio Amplifier 40W – Circuit Schematic
High Fidelity Valve audio Amplifier 40W
The design of the 40W Valve Amplifier is shown in the figure. In valve amplifiers the predominant feature is the strong presence of the second and third harmoni...
Power Audio Amplifier DMOS 2x100W using two TDA2794 – Circuit Schematic
Power Audio Amplifier DMOS 2x100W using two TDA2794
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 hi...
Three of the five band equalizer circuit transistor – Circuit Schematic
Three of the five band equalizer circuit transistor
Figure 4-33 and using substantially the same circuit configuration, the common amplifier and analog inductive circuits are provided, but its analog inductive ci...
HA250A application circuit – Circuit Schematic
HA250A application circuit
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 t...
There are preamplifier with four inputs – Circuit Schematic
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 hea...
Vanda F-9500A preamplifier b – Circuit Schematic
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 oI...
The LM3886 BTL amplifier – Circuit Schematic
The LM3886 BTL amplifier
Figure 2-60 is LM3886 amplifier roar practical circuit, the circuit with one NE5532 as preamplifier, output power up to 200Wo. LM3886 power amplifier for use, d...
OCL power amplifying circuit – Circuit Schematic
OCL power amplifying circuit
Figure 1-30 is an example of an OCL power amplifier circuit, the following specific analysis: In Figure 1-30, VTi, VTz form a single-ended input and differentia...
LM4561 LM4562 consisting of 170W power amplifier circuit – Circuit Schematic
LM4561 LM4562 consisting of 170W power amplifier circuit
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 circu...
Broadband amplifier with bias compensation circuit diagram – Circuit Schematic
Broadband amplifier with bias compensation circuit diagram
Figure (a) shows the circuit with general inverting amplifier circuit differs only in that series with a 100k potentiometer feedback resistor between the input ...
Sound field effect transistor amplifier circuit – Circuit Schematic
Sound field effect transistor amplifier circuit
Field effect transistors voice amplifier, the input impedance of the transistor is low, only lkCZ, requiring signal source provides a constant current signal to...