A
Adrian Jansen
Guest
On 28/11/2011 12:25 AM, kreed wrote:
Virtually every lab I ever worked in in any industrial plant had one in
the '50s - '70s, just to keep the lab supply happy when the industrial
sections put huge demands on the mains.
Big lumps of iron and copper, but simple and almost never fail.
--
Regards,
Adrian Jansen adrianjansen at internode dot on dot net
Note reply address is invalid, convert address above to machine form.
Saturable reactor transformers ( Stabilac ) have been around for years.On Nov 25, 8:53 am, "bristan"<n...@none.com> wrote:
Last Saturday was very hot and at about 6.30 pm a series of short blackouts
occurred at my home in Wollondilly shire on the outskirts of Sydney. I
happened to have a power meter connected at the time and watched as the
voltage dropped from around 230 slowly to 208 at which level the power went
off for a couple of seconds then restarted. The voltage went back to 230 or
so then the process repeated . This went on for about half an hour. I
switched off what I could but it is a pain having to reset all the clocks,
redate the phone etc. The fridges weren't, to happy about it either. Non
peak times the voltage goes up around 250
Maybe we are going to have to have a UPS set up in our homes with all the
changes in the electricity arrangements!
Just remembered, in the former USSR republics, this sort of thing
happened more and more in the last decade of its existance, to the
point where the state electrical manufacturing company "electronika"
produced these "stabilisers" which from memory had 2 power
transformers and a large inductor (no solid state parts) - in order to
keep the mains at a stable 220v.
I did take a pic, of the device and the schematic for it if anyone is
particularly excited about it.
Virtually every lab I ever worked in in any industrial plant had one in
the '50s - '70s, just to keep the lab supply happy when the industrial
sections put huge demands on the mains.
Big lumps of iron and copper, but simple and almost never fail.
--
Regards,
Adrian Jansen adrianjansen at internode dot on dot net
Note reply address is invalid, convert address above to machine form.