
Construindo seu próprio amplificador
II
Continuação
1) Coletânea de circuitos clássicos apresentados por Rainer Zur Linden em seu livro
“Build your Own Audio Valve Amplifiers”
2) pré-amplificadores e unidades de saída de
“Elektronik-Selbstbauprojekte Forum”
3) pré-amplificadores e unidades de saída em
“DIY Paradise”
B- Classical Beam Power Valve Circuits

Push Pull output Amplifier with 2 x 6L6GC
6L6 Cathode excited. Typical American amplifier of the ‘40s years
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General purpose Amplifier
6L6 Williamsom type with Cathode feedback loop and power supply
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Single ended output stage with 6L6 GC as triode
6L6 Cascode excited SE
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Push Pull output Amplifier with 2 x 6V6 GT
6V6 Typical Schmit differential phase inverter (same power supply as 6V6 Parallel excited SE)
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Output Amplifier with direct coupled 6V6 GT
6V6 Parallel excited SE
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Class A stereo output Amplifier with 2 x KT88
KT88 SE Amplifier
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C- Classical Pentode output Circuits

Hi-Fi Amplifier with 2 x EL34
EL34 Simplified Concertina phase inverter PP Power output
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Old European Technology
EL34 output with Typical ECH21 phase inverter of the 1950s years
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Push Pull output Amplifier with 2 x EL34
Paraphase inverter Amplifier & Power Supply
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Hi-Fi Amplifier
EL34 The Cyrclotron with two power supply
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Output Amplifier with EL34 as triode
EL34 SE High quality amplifier
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Push Pull output Amplifier with 2 x EL84
EL84 differential phase inverter w/ feedback

Push Pull output Amplifier with 4 x EL84
EL84 split phase inverter (concertina) w/ feedback
Output cathodes with current stabilizer.
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Compact SE EL84 Amplifier
Small SE EL84 amplifier
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Classical EL86 SRPP 800 W output stage
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Push Pull Stereo Amplifier with 4 x ECL82
Typical 180 degree paraphase inverter

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