[Amps] Transformers

[Bryan Swadener]

--- Manfred Mornhinweg wrote:

> Anyway, I will keep preaching for the do-it-yourself
> approach. Winding 
> transformers is easy! No significant machinery is required.
> I really 
> think that anyone who can build an RF power amplifier,
> certainly can 
> wind the transformer for it.

Years ago, I needed a transformer to use with "An RF Proof 30-Amp Supply" from the ARRL Handbook (http://www.dd1us.de/Downloads/an rf proof 30 amps power supply 1_0.pdf).  I already photoetched the control board and fabricated a chassis and had an otherwise dead HV transformer of sufficient core size.  So, I gave rewinding it a try, using 8 AWG magnet wire instead of the miles of hair-thin wire.  I obtained the wire from a motor rewinder.  It works great!

> A few days ago I wound two large high voltage transformers
> for use with 
> my water turbine setup. Today I published a set of photos
> showing the 
> construction process of these transformers. Those of you
> who are 
> interested can have a look at this page. The transformer
> photos are down 
> near the end of this long page:
> 
> http://ludens.cl/paradise/turbine/turbine.html

That's REAL cool, Manfred.  Kudos to you!  You can operate Field Day high power w/o having to refuel a noisy generator or run batteries dead... and get an extra 100 bonus points for natural power! hi

> If anyone wants my Excel spreadsheat to calculate
> transformers, I will 
> be glad to send it by direct e-mail. This spreadsheat will
> not do the 
> full job, but it's a significant help in designing and
> optimizing 
> transformers.

Why not post it on your website for everyone to have?

> Manfred.
> 
> ========================
> Visit my hobby homepage!
> http://ludens.cl
> ========================

vy 73 es gud dx,
Bryan WA7PRC