2w Discrete Audio Amplifier | Audio-Digital.net

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Ultra low noise amplifiers - JanasCard

http://www.janascard.cz/PDF/Design%20of%20ultra%20low%20noise%20amplifiers.pdf

lower noise discrete amplifier with lower power consumption and lower cost. 1.1 Ultra-low noise AC amplifiers with bipolar transistors With bipolar transistors, the value for emitter-base voltage noise and base current noise of an ideal transistor can be expressed as follows [1],[2]: en = kT√ 2 qIc, in =√2qIb = √ 2qIc hFE (1)

2 Watt Amplifier Circuit using Transistors

http://www.zen22142.zen.co.uk/Circuits/Audio/2wamp.html

Description: A 2 Watt audio amplifier made from discrete components. Design uses a classic push pull output stage wit 2 pre stages. Frequency response is excellent and circuit has low distortion. Notes. This was one of the earliest circuits that I ever designed and built, in Spring 1982. At that time I had only an analogue meter and a calculator to work with.

Audio power amplifier circuit diagrams / circuit schematics

http://www.satsleuth.com/Schematics.aspx?Category=Amplifiers

Low power audio amplifier using BC109C along with BD679 and BD680 Darlington pairs: Amplifiers -3: 10 watt audio power amplifier using discrete transistors (includes PCB layout) Amplifiers -1: 2W Audio Amplifier using BD139 and BD140 transistors: Amplifiers: Jan 26, 2001: 2: Peak reading audio level meter using CA3140 opamp: Amplifiers: Jan 26, 2001-3

circuits: 2W Audio Amplifier using BD139 and BD140 transistors

https://circuitsfun.blogspot.com/2011/07/2w-audio-amplifier-using-bd139-and.html

2W Audio Amplifier using BD139 and BD140 transistors. A 2 Watt audio amplifier made from discrete components. Notes. This was one of the earliest circuits that I ever designed and built, in Spring 1982. At that time I had only an analogue meter and a calculator to work with. Although not perfect, this amplifier does have a wide frequency response, low harmonic …

2W Audio Amplifiers | Newark

https://www.newark.com/c/semiconductors-ics/amplifiers-comparators/audio-amplifiers?output-power=2w

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