🚀 go-pugleaf

Hello there!!

In the March 1989 issue of Radio-Electronics, there is a construction
article on an audio power amp with 12VDC supply.  The conversion from
12 VDC to +/- 35 VDC is accomplished using a toroidal transformer.

The article claims that the ferrite core (toroid) is a critical part
and cannot be substituted.  However they give turns ratios, etc.
implying that you CAN "wind yer own".  Can anyone tell me more about
this core that they call "tape-wound"?  What the heck does that
mean--what's wrong with MY tape?  I almost suspect the company that
designed the amp wanted R-E to sell a few xformers for them!!

Anyway, any feedback on tape-wound toroidal ferrite cores or the
project in general would be appreciated!  (Almost wish I'd taken
a course in power, now...)

Thanks!

Paul E. Ganter

p.s.  their specs:     1 mil tape-wound
                       1.460 x 0.915 x 0.345 "
                       Magnetics, Inc.  #50029-ID