[AMPS] High Voltage Toroidal Power Transformers

[Jim Strohm]

Bill Smith <ko4nrbs@yahoo.com>

>What are the pros and cons of using High Voltage
>Toroidal Power Transformers in HF Linear Amplifiers?

Starting with the assumption that the toroidal power transformer is
correctly enginnered and constructed --

It would be lighter, more efficient, less likely to radiate noise, less
susceptible to EMI, run cooler, be quieter ...

About the only bad thing I can think of is that your Collins 30S-1 would no
longer be 100% original.  And -- it would probably cost more than a
conventional transformer to purchase new.  And -- rewinding it would not be
as straightforward a task as with a conventional transformer.

Something to know -- a lot of the "square box" sealed military surplus
transformers are toroidal transformers in a form factor that's compliant
with conventional transformers.

For my part, I like to install HV power transformers and never touch them
again, ever.  I kinda enjoy rewinding filament transformers because it's an
exercise in turning off your brain, kinda like fingerpainting.

Jim N6OTQ




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