7 Aug
2021
7 Aug
'21
9:48 p.m.
On Aug 7, 2021, at 9:17 PM, Chuck Guzis <cclist at
sydex.com> wrote:
On 8/7/21 8:20 PM, r.stricklin wrote:
I?m convinced.
Annoying, but I still appreciate the tip. I think I can get where I need to go with the
assorted Boschert manuals on Bitsavers, if I put the effort into tracing mine out.
It looks a lot, based on where they appear in the schematics, like a reasonable guess that
the four 1027 (DO-42ish) devices I diked out (and one of which is shorted) are either
1N4004 or MR820. Based on the packaging I think I can guess they are perhaps 1N4004
(59-10).
But I should trace the thing out anyway and try to draw my own schematic, first.
Thanks.
ok
bear.
Ugh? I hadn?t even thought of that. You?re
confident of it?
Until someone comes up with a better theory, yes. Consider this
supply:
http://bitsavers.org/pdf/boschert/Boschert_OL25_Single-Stage_Power_Supply_M…
Go to the BOM on page 32. Note hat a 10-1038 is a 1N4004, a 10-1013 is
a 1N4148, a 13-1055 is a MPS2222, and so on. Your numbers seem to
follow this line, just without the prefix, which I assume indicates the
general type of component; e.g. 10 - silicon rectifier diode; 13 an NPN
transistor, 12 a PNP and so on.