Tutorial Buck-Boost Transformer Connections

Caution: No voltage isolation danger of electrical shock!
How to use the secondary transformer winding to boost or drop AC voltage.
www.bristolwatch.com/index.htm

[@martinmartinmartin2996]

It should be added that the "Buck-Boost" transformation that Loffin's explanation should emphasize the LACK of 110volt Power line isolation resulting from reconnecting the secondary of a transformer to the primary of that transformer.
This means that the load is NOT grounded, that the the final
output voltage of the Buck_Boost transformation is hazardous:
in that the Load wiring is at directly connected to the 110v power lione, NO LONGER ISOLATED .
observerms

[@LewisLoflin]

That is in the associated webpage. Thanks.

[@jp040759]

Interesting topic. Always read about doing this never tested it. The tricky part is what is the maximum current you can expect from these configurations? Never could figure that part out.

[@LewisLoflin]

It's limited by the lowest current winding.

[@DK-sg3oe]

@@LewisLoflin now sir could u pls sow via diagram as u explained bucking diagram how this winding could b using 3 coils wr exactly will u b placing the coils inside or horizontal and wr will the output be thkz a lot in advance for ur advice, and thks once more for excellent tutorials on bucking transformer

[@LewisLoflin]

See the following: www.bristolwatch.com/sr/buck_boost.htm

[@MrJohnnaz]

Isn't this just like an autotransformer with a tap?

[@LewisLoflin]

Exactly it's a type of autotransformer but more versatile.