RE: My own PS problems..

From: Baltissen, GJPAA (Ruud) (
Date: 2004-01-19 08:16:53

Hallo William,

> 1) Your transformer does not deliver enough power (Watts), in which
> case the voltage will drop under load.  you may just need a bigger
> transformer.

This is what I was thinking about as well.

> 2) If your 900 expects 50 Herz current, the 60 Herz current
> may confuse the controller in the swithcing power supply.

No, the first thing a switching PS does is rectifying the incoming power.
Then the resulting DC is sent to a trafo through a transistor. This
transistor is switch on/off at a very high frequency (??? KHz) thus
generating the needed AC where a trafo can work with.
According the above you can see that it makes no difference wether the input
is 50 or 60 Hz.

> By the way, most Amarican homes have 220V available at the
> fuse box. .....
> ..... A quick cheap fix is to use the hot lines from two
> different 110V circuits that are on opposite phases.

Ehhh, that only makes 190V IMHO. But I have some PS's that work in the range
180-260V so maybe there is a chance the C900's accepts it as well.

Another possebility: Most PC PS's have a switch that enables one to choose
between 220V and 110V. To be honnest, I never studied how it worked but I
think it is done by connecting a big condensator in line with the input.
This C works as a 'resistor' thus dissipating halve of the voltage. But
being a impedance and not a real resistor, this proces doesn't generate

Please check if these PS's have this mechanism as well. Not seeing a switch
does not mean that it therfor is impossible; one could have ommitted the
switch to reduce costs as the C= was meant for Europe anyway.

   / __|__
  / /  |_/     Groetjes, Ruud
  \ \__|_\
   \___|       URL:


De informatie in dit e-mailbericht is vertrouwelijk en uitsluitend bestemd voor de geadresseerde. Wanneer u dit bericht per abuis ontvangt, verzoeken wij u contact op te nemen met de afzender per kerende e-mail. Verder verzoeken wij u in dat geval dit e-mailbericht te vernietigen en de inhoud ervan aan niemand openbaar te maken. Wij aanvaarden geen aansprakelijkheid voor onjuiste, onvolledige dan wel ontijdige overbrenging van de inhoud van een verzonden e-mailbericht, noch voor daarbij overgebrachte virussen.

The information contained in this e-mail is confidential and may be privileged. It may be read, copied and used only by the intended recipient. If you have received it in error, please contact the sender immediately by return e-mail; please delete in this case the e-mail and do not disclose its contents to any person. We don't accept liability for any errors, omissions, delays of receipt or viruses in the contents of this message which arise as a result of e-mail transmission.

       Message was sent through the cbm-hackers mailing list

Archive generated by hypermail pre-2.1.8.