[Milsurplus] Regulated Power supply Variac Design

[Jim Whartenby]

How about a servo controlled VARIAC?https://www.stereonet.com/forums/topic/537840-the-stac-ac-voltage-regulator/
Jim
Logic: Method used to arrive at the wrong conclusion, with confidence.  Murphy 

    On Saturday, December 2, 2023 at 06:57:50 PM CST, B. Smith <smithab11 at comcast.net> wrote:  
 
   I just repaired a 5 amp power supply that was purchased at a rally in non working condition. I purchased it primary for parts especially ariits variac. Looking at the construction I find it unusual that the company "Power Designs" (model # 3650-S) utilized a variac for voltage control and then piggy backed a wire wound pot on the back for input and feedback for voltage regulation - - - So the variac does most of the "work".  Its a great supply, works well with 24V dynamotors or solid state circuits requiring lower regulated voltages. And as a bonus you can lift it.  
 Q. Has anyone any information on similar supplies using a variac/feed back pot ?
 k4che
 
 
 
 
 
 
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