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MagneQuest/Peerless Forum Welcome! Need support, you got it. Or share your ideas and experiences. |
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MagneQuest/Peerless Forum Welcome! Need support, you got it. Or share your ideas and experiences. |
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In Reply to: Puzzled ... posted by gluca on February 10, 2008 at 05:16:00:
Why two (parallel) CCS under the cathodes of EL34s?
I can't speak for Kevin here, but a couple of possibilities come to mind.
One is that he's wanting to avoid having to heatsink the devices. On an appropriate heatsink, they'll dissipate about 15 watts, but in free air, only about 2 watts.
Another is that the devices he's using are depletion mode MOSFETs, which like JFETs have a maximum drain current they can supply (Idss in the datasheets). If you need more, you need to parallel devices to get it.
Just a couple of hunches.
se
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Follow Ups
- RE: Puzzled ... - Steve Eddy 11:01:10 02/10/08 (3)
- You're right. - Poindexter 11:20:47 02/10/08 (2)
- RE: You're right. - GTCharlie 04:27:54 02/12/08 (1)
- RE: Output Stage Balance - KevinC 05:41:59 02/12/08 (0)
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