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Amplifiers: Output stage - Lenard Audio
https://education.lenardaudio.com/en/12_amps_5.html
All output transistors are arranged as emitter followers. The collectors are connected directly to the rails. The emitter follows the signal on base within 650mV. The output transistors do not increase the size of the audio signal. Output transistors can only add current. Quasi complementary is used in the majority of amplifiers. The first large silicon transistors …
Transistor Audio Amplifier Manual - World Radio History
https://worldradiohistory.com/BOOKSHELF-ARH/Author-Groups/Clive-Sinclair/Transistor-Audio-Amplifier-Manual-Bernard-176-Clive-Sinclair.pdf
TRANSISTOR AUDIO AMPLIFIER MANUAL 7 > II Input 2 1.1, CI 10p. RI 270 fl 33K 100K 4F-2p. 1)1 OC 57 50 K 47K-1.3 or 1.5V. 4I 65011TSL impedance Magnetic earpiece. OC 58 Fig. I. 500p,W. output amplifier. Tr. I OC 59 > I 2p, 33 K 2.7K amplifier.
Best transistor to use for audio amplifier - Electrical ...
https://electronics.stackexchange.com/questions/97827/best-transistor-to-use-for-audio-amplifier
Transistors are used in audio amplifiers in different ways. You have discrete class-a circuits that overdrive well like the infamous Neve console mic pre. On paper an op amp designs will have the best performance (actually putting separate transistors in front of a conventional op amp is probably going to get close to the theoretical limit of performance).
4 transistor audio amplifier circuit - Eleccircuit.com
https://www.eleccircuit.com/4-transistor-audio-amplifier-circuit/
Each output transistor deals with one half of the audio cycle, one being cut-off when the other conduct. Next, the Q1 and Q2 transistors run as a pre-amp to increase the incoming voltage to drive the output pair. Then, at Q1 the bias of the whole circuit commences with the voltage divider made up of the 56K and 100K resistors.
Output Transistors also used in which other Stereo ...
http://www.oaktreevintage.com/resources_misc/output_transistors_in_stereo_amps_receivers_substitutions_also_used_in....htm
Let's try the 3 transistors Audio Amplifier circuits (MONO ...
https://www.eleccircuit.com/lets-try-the-3-transistors-audio-amplifier-circuits/
Not only that we still have 3 transistor ampliflier. Mono amplifier two speaker outputs using transistors. In normal stereo amplifier is 2 speakers. And if a mono amplifier is a single speaker. But this circuit is a special Mono amplifier. It can drive 2 speakers at the same time. Without parallel or serial access.
Small Audio Power Amplifier Using Op-Amp and Two Transistors
https://www.deeptronic.com/electronic-circuit-design/small-audio-power-amplifier-using-op-amp-and-two-transistors/
At idle condition, when there is no signal in the input, the output should be bet at Vcc/2. When the signal goes positive, the op-amp output will drive the biasing point to positive side the lower transistor will be switched off and the upper transistor will be driven to give correct voltage at the feedback point pin 3 (the inverting input).
Best sounding transistors - High-End Audio Discussion Forum
https://forum.audiogon.com/discussions/best-sounding-transistors
The number of output transistor an amp uses can dictate how well it moves the speaker. For example, when you compare an amp with 4 output transistors (2 for positive waveform and 2 for negative waveform) with an amplifier that has 12 output transistors, the transistors on the 12 amp will work 1/3 as hard for the amp to push the same amount of …
100W Power Amplifier TIP147 TIP142 Transistors (Pro and ...
https://320volt.com/en/100w-power-amplifier-tip147-tip142-transistors/
You can use 4 6A10 diodes or KBU10M bridge diodes for DC rectification in the power supply circuit, filter capacitors should be at least 4700uf, 6800uf would be better. The hFE values of 2 2X2N5401 transistors in the audio input should be the same or close to each other, this detail is valid for all amplifiers with similar transistors.
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