Negative Feedback in Valve Amplifiers - Testing - Part two.
16:09
Negative Feedback - In Audio Amplifiers - How to Apply - Part 1.
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Valve Amp - Faulty Valve - Parasytic Oscillation.
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What is Negative Feedback? Tube Guitar Amp Theory And Tone Test
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Rewinding a mains transformer - Tek 585A scope - Part One.
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Valve/Tube Matching - Is It Important? Matching 807's
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Tube Lab #53 Negative Feedback
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# A139 Diseño, simulación puesta en marcha y medidas de un oscilador para para la banda de 21Mhz
46:40