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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: How much current headroom to specify when replacing a power Xfmr posted by Alpha Al on October 31, 2014 at 10:10:18:
Wow, that is a seriously odd power supply. Perhaps it's because I don't really do much at all with SE designs, I really prefer push-pull.
But I am curious about those two huge resistors, the 15 and 25W ones bleeding the two high voltage supplies to ground. What on earth are they for? They dissipate huge amounts of heat, and unless I am missing something, all they do is drop the voltage while increasing the ripple on the supplies.
What is going on here? Why on earth would you want to throw 15ma and 25ma of current away like that? I just don't get this design. Can somebody enlighten me?
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Follow Ups
- RE: How much current headroom to specify when replacing a power Xfmr - Sherwood Forest 10:44:35 10/31/14 (6)
- RE: How much current headroom to specify when replacing a power Xfmr - Paul Joppa 13:12:07 10/31/14 (2)
- +1 - drlowmu 16:21:13 10/31/14 (0)
- RE: How much current headroom to specify when replacing a power Xfmr - Sherwood Forest 13:34:59 10/31/14 (0)
- RE: How much current headroom to specify when replacing a power Xfmr - drlowmu 11:45:16 10/31/14 (2)
- RE: How much current headroom to specify when replacing a power Xfmr - Alpha Al 20:29:59 10/31/14 (1)
- RE: How much current headroom to specify when replacing a power Xfmr - Paul Joppa 10:55:24 11/01/14 (0)
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