Around here, a search of thrift stores turns up quite a few model
train transformers and slot car tranformers, at very cheap prices.
Not all light dimmers will handle a transformer as a load and may blow
out. If the transformer is at too high a voltage, you can ease both
problems by putting an incandescent light bulb in series with the
primary and attach this to the light dimmer.
Steve
train transformers and slot car tranformers, at very cheap prices.
Not all light dimmers will handle a transformer as a load and may blow
out. If the transformer is at too high a voltage, you can ease both
problems by putting an incandescent light bulb in series with the
primary and attach this to the light dimmer.
Steve
--- In Homebrew_PCBs@yahoogroups.com, "twb8899" <twb8899@y...> wrote:
...
> A regulated power supply may not be the best way to make a rectifier.
> I have always used a "variac" variable transformer controlled
> rectifier for plating. This allows to current to be set without the
> power supply trying to compensate. The voltage will end up where it
> needs to be if the current is set properly. You could try using a
> model train transformer for your rectifier or use a triac lamp dimmer
> to control the power supply transformer. Maybe some of these ideas
> will help.