On 8 Apr 2025 4:36 pm, Jean-Paul wrote:
As we were power elecronics designers since 70s' we have a collection of Variacs, the best are indeed the old Staco and GenRad with ACV RMS and AC .
Jean-Paul -
A Staco is not a "Variac," which is a registered trademark. The original Variacs were the variable autotransformers made by General Radio Company. The current holder of the trademark is ISE, Inc.
The variable autotransformers made by Staco Energy Products have the registered trademark StacoVT. Those made by Superior Electric have the registered trademark POWERSTAT.
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Dale H. Cook, GR/HP/Tek Collector, Roanoke/Lynchburg, VA
Dale H. Cook