| Electronics > Projects, Designs, and Technical Stuff |
| Planning to build benchtop 500V tube PSU, help needed. |
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| 001:
--- Quote from: KD4CCF on February 27, 2019, 02:10:58 pm ---For vintage stuff, it's often better to buy then recreate. Check out Heathkit IP-17 and IP-32 power supplies on ebay. --- End quote --- This is normal only for US customers. Abroad, we can build a new one for the cost of delivery |
| 001:
--- Quote from: Wolfgang on February 23, 2019, 10:32:23 pm ---Hi, sorry for no progress, but still searching the web for some realistic tube SPICE models. Wolfgang --- End quote --- How are You? |
| Wolfgang:
Hi, I got some models now (PL519 with grid currents) but they need to be tried out before I can recommend them. Some other tasks got in the way as well, so I apologize for the delay. regards Wolfgang |
| artag:
I've got a Kepco HB525 similar to https://www.georgia-market.com/LaGrange-/Electronics-/Kepco-hb-regulated-dc-power-supply-HB4AM.asp (not that actual one, it's not my advert) which is probably a pretty decent commercial example of this sort of thing. I can copy the schematic if useful, as Kepco kindly sent me a free copy of the manual (5* for Kepco !). 500V, 500mA, 0.01% line & load regulation, 1mV ripple, 2 x 10A aux heater supplies. The only downside (ok, apart from the weight, it's pretty much 100% transformium) is that it's supposed to have 5 GE 7581 tetrodes as the output devices. These, together with similar like the KT66 are prime audio valves and so rather expensive. I currently have a couple of battered 6l6 in there which keeps it well below rated output. So I really want to find some good quality 7581 equivalents which are, for whatever reason, disliked by the golden ear brigade. Maybe russian ? Or I could try substituting some suitable FETs but that's heresy, right ? Any suggestions ? |
| schmitt trigger:
At least it doesn't require any NOS genuine W-E 300B tubes. >:D https://www.ebay.com/itm/ONE-Western-Electric-300b-NOS-1940S-Pre-WWll-production-FREE-S-H-ANYWHERE/142976348376?hash=item214a0df0d8:g:NWsAAOSwIrVbT8jG |
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