Re: Saturable Reactor Ballast from MOT's

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: tesla <tesla@xxxxxxxxxxxxxxx>

Team

Just lashed up 2 900w MOTs as a saturable reactor and achieved smooth
control of a 2.4kW heater from nearly zero power to close to full power.
MOT's got warm after 5 min (about 5A per MOT in the primary)

Max power with about 50v per MOT secondary but last 20 volts clearly made
the least difference

The use of MOT's as satuarable reactors to control high power loads is set
to become the easy path to NOT buying an expensive variac I suspect.

Not to forget the secondary does have volts on it may be in phase BUT still
there

Thanks again for his useful idea
Rgds
Ted L in NZ