Re: converting to 230 volts; Musical Fidelity A308

"Peter Larsen" wrote ...
Richard Crowley wrote:

IF the device has a "split-primary" winding on the power
transformer, the two halves can be connected in parallel
for 115V, or wired in series for 230V. Since this is mains
power wiring, it is not the best place for a beginner to start.

Safetystandards require larger clearances in stuff made for 230 volts
than in stuff made for 115 volts, so just modding could result in a box
that voids fire insurance if plugged in.

OTOH, if it is designed for 115/230V, I'd bet your first year's
fire insurance premium that you won't be the first owner to
switch it to 230V.

Some equipment has a switch, or plug- in jumpers, etc. to
switch between 115 or 230V. Other equipment
will require moving soldered wires around.

In the context of such questions is has previously been mentioned that
50 Hz may require more iron in the transformer than 60 Hz. It is beyond
me to know whether it is feasible or not, but there are safety concerns
to be aware of.

Are these things sold in 50Hz land?

.

Relevant Pages

  • Re: Power Inverters
    ... Although switch mode supplies will work off higher frequencies ... You *can* build an inverter this way, switching DC at 120 Hz and using a ... transformer to step that up from 12 V to 120 V at 60 Hz. ... *All* more modern portable inverters that I've ...
    (comp.sys.laptops)
  • Re: Power Inverters
    ... Although switch mode supplies will work off higher frequencies ... You *can* build an inverter this way, switching DC at 120 Hz and using a ... transformer to step that up from 12 V to 120 V at 60 Hz. ...
    (comp.sys.laptops)
  • Re: +/-45V PWM supply - terrible inefficiency and feedback inaccuracy
    ... most likely in the power switch. ... excessive dissipation. ... for the transformer but one thing to look for is winding capacitance. ...
    (sci.electronics.design)
  • Re: Laptops being "dual-voltage"?
    ... >>transformer whose secondary is full wave rectified to ... the transformers used in Switch mode supplies are used in flyback ... method that flyback mode will allow. ... because all the energy is in this flyback pulse* which is very ...
    (comp.sys.laptops)
  • Re: Question about STAX earspeaker systems
    ... > manually switch outputs from their CD players between ... Stax models that can be had at good prices Many of the older model Stax ... switch and you could connect your speakers to the transformer rather ... All of the new models, however, have amplifiers rather than ...
    (rec.music.classical.recordings)