13 Jan
2020
13 Jan
'20
4:48 a.m.
On 01/12/2020 10:34 PM, Stefan Skoglund via cctalk wrote:
s?n 2020-01-12 klockan 21:10 +0000 skrev Rob Jarratt
via cctalk:
The transformer Rod describes and provided schematic for is
part of a switching power supply,
and not a 50/60 Hz mains transformer. From the picture, it
is almost certainly a ferrite core
transformer running at 25+ KHz.
Jon
The PSU in my VAXmate failed recently and I think
I have found a
problem
with one of the windings on the transformer not ringing when I test
it with
a ringing tester. The technical description of the VAXmate says that
one
winding is operated in flyback mode and I wonder if that has any
bearing on
the ringing test. Also, one of the pins appears not to be connected
to
anything else, so possibly a broken (melted?) wire.
Can anyone help with the following questions:
The transformer is basically only
intended to provide AC at a specific
voltage while preventing surges and noise from the utility to create
havoc.
What voltage is it specified to provide ? If so, can it be replaced
with maybe a new AC to AC device ?