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Home » Audio » Thermionic Emissions » Class A, AB1, B, C Operation/Modes (How Class A, AB1, B, C Modes Work and Their Strengths and Weaknesses)
| Re: Class A, AB1, B, C Operation/Modes [message #96973 is a reply to message #96689] |
Tue, 05 September 2023 23:48   |
positron
Messages: 97
Registered: May 2020
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Viscount |
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I found that B1 graph in my initial post was obviously wrong.
I have attached the correct graph, B, to this post.
I apologize for the inconvenience.
I would like to add a quote from the RCA Radiotron Designers
Handbook, 1960, written by 26 engineers in Collaboration.
This concerns Push Pull operation.
"A Class A amplifier is an amplifier in which the grid bias and
alternating grid voltages are such that the plate current of the output
valve or valves flows at all times. The suffix 1 indicates that
grid current does not flow during any part of the input cycle."
"A very useful operating condition is the borderline case between
Class A and Class AB1, that is when the plate current just reaches
the point of cut-off"
Notice, each tube in the Push Pull output stage operates
Class A until each output tube just reaches the point of
cutoff. That means each output tube conducts the entire
musical waveform.
Class A output wattages can range from small to many watts output,
and with extremely low distortion, especially in the first watt
out.
cheers
steve
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Class A, AB1, B, C Operation/Modes
By: positron on Sun, 05 February 2023 20:40 |
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Re: Class A, AB1, B, C Operation/Modes
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Re: Class A, AB1, B, C Operation/Modes
By: gofar99 on Mon, 06 February 2023 20:38 |
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Re: Class A, AB1, B, C Operation/Modes
By: positron on Tue, 07 February 2023 16:13 |
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Re: Class A, AB1, B, C Operation/Modes
By: gofar99 on Tue, 07 February 2023 19:33 |
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Re: Class A, AB1, B, C Operation/Modes
By: positron on Tue, 07 February 2023 20:37 |
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Re: Class A, AB1, B, C Operation/Modes
By: gofar99 on Thu, 09 February 2023 21:01 |
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Re: Class A, AB1, B, C Operation/Modes
By: positron on Thu, 09 February 2023 21:35 |
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Re: Class A, AB1, B, C Operation/Modes
By: positron on Tue, 28 February 2023 19:04 |
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Re: Class A, AB1, B, C Operation/Modes
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Re: Class A, AB1, B, C Operation/Modes
By: gofar99 on Wed, 01 March 2023 19:45 |
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Re: Class A, AB1, B, C Operation/Modes
By: positron on Sun, 05 March 2023 00:33 |
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Re: Class A, AB1, B, C Operation/Modes
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Re: Class A, AB1, B, C Operation/Modes
By: gofar99 on Sun, 05 March 2023 08:10 |
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Re: Class A, AB1, B, C Operation/Modes
By: positron on Mon, 06 March 2023 19:01 |
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Re: Class A, AB1, B, C Operation/Modes
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Re: Class A, AB1, B, C Operation/Modes
By: gofar99 on Tue, 09 May 2023 21:30 |
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Re: Class A, AB1, B, C Operation/Modes
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Re: Class A, AB1, B, C Operation/Modes
By: positron on Tue, 05 September 2023 23:48 |
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Re: Class A, AB1, B, C Operation/Modes
By: gofar99 on Fri, 08 September 2023 21:12 |
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Re: Class A, AB1, B, C Operation/Modes
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Re: Class A, AB1, B, C Operation/Modes
By: positron on Thu, 12 October 2023 11:21 |
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Re: Class A, AB1, B, C Operation/Modes
By: positron on Fri, 03 November 2023 12:22 |
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Re: Class A, AB1, B, C Operation/Modes
By: gofar99 on Fri, 03 November 2023 20:58 |
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Re: Class A, AB1, B, C Operation/Modes
By: positron on Sun, 05 November 2023 01:38 |
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Re: Class A, AB1, B, C Operation/Modes
By: positron on Thu, 07 December 2023 23:12 |
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Re: Class A, AB1, B, C Operation/Modes
By: gofar99 on Mon, 18 December 2023 20:20 |
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Re: Class A, AB1, B, C Operation/Modes
By: positron on Tue, 16 January 2024 21:32 |
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Re: Class A, AB1, B, C Operation/Modes
By: gofar99 on Wed, 24 January 2024 20:31 |
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