An audio-transformer is seldom used as the...

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Question 1 of 20YJjifKO5D85UjXLkgHr5

An audio-transformer is seldom used as the output device in the plate circuit of a tetrode audio-amplifier stage:

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Question 1 of 20

YJjifKO5D85UjXLkgHr5

An audio-transformer is seldom used as the output device in the plate circuit of a tetrode audio-amplifier stage:

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🔍 Key Concepts

• Impedance matching between the tetrode plate circuit and the load (speaker or following stage) • How a tetrode’s plate impedance compares with the impedance that an audio transformer normally presents • What happens in a tube amplifier when the load impedance is too high or too low

💭 Think About

• Think about what the plate of a tetrode ‘wants to see’ as a load. Should that be a very high impedance, a very low impedance, or something in between for efficient power transfer? • If you used an ordinary audio transformer as the output device, how would that affect power transfer and distortion in the plate circuit? • Compare the phrases ‘cannot supply enough impedance’ and ‘supplies too much impedance’ with what you know about optimum plate load for an audio power stage.

✅ Before You Answer

• Be clear on whether a tetrode’s optimum plate load impedance is relatively high or low compared to what an ‘ordinary’ transformer offers at its primary • Verify what impedance matching for maximum power transfer requires in tube amplifiers (relationship between tube plate resistance and transformer primary impedance) • Check whether cost is usually the limiting factor in choosing transformer vs. other output coupling methods in basic audio tetrode stages

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Question 1 of 20YJjifKO5D85UjXLkgHr5

An audio-transformer is seldom used as the output device in the plate circuit of a tetrode audio-amplifier stage:

Back

Question 1 of 20

YJjifKO5D85UjXLkgHr5

An audio-transformer is seldom used as the output device in the plate circuit of a tetrode audio-amplifier stage:

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

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