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General Asylum General audio topics that don't fit into specific categories. |
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General Asylum General audio topics that don't fit into specific categories. |
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In Reply to: Shedding some light... posted by Charles Hansen on June 20, 2005 at 07:56:07:
The solid-state equivalent to a tube push-pull stage is a complementary output, with NPN between the positive rail and the load, and PNP between the load and the negative rail.Until recently, there were no good matches of NPN and PNP power transistors for audio service. The PNP uses holes in the base as minority carriers, and these have much lower mobility than the electrons in the NPN bases.
ON Semiconductor makes a nice complementary pair: MJL3281A and MJL1302A. These are used in the InnerSound ESL-300 and similar amps.
However, nothing in my experience beats Ralph Karsten's Circlotronic OTL tube output stage.
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Follow Ups
- Complementary transistors - Al Sekela 13:29:29 06/20/05 (5)
- Nope - Charles Hansen 21:09:42 06/20/05 (4)
- Horowitz and Hill, pages 92-93. (nt) - Al Sekela 15:42:32 06/21/05 (3)
- Re: Horowitz and Hill, pages 92-93. (nt) - john curl 17:09:14 06/21/05 (2)
- P.S. - Steve Eddy 20:04:23 06/21/05 (0)
- Re: Horowitz and Hill, pages 92-93. (nt) - Steve Eddy 19:55:41 06/21/05 (0)
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