Re: Ideas for cheap and effective loop antennas


Alberto I2PHD
 

On 8/6/2017 5:50 PM, Leif Asbrink wrote:

The transformer can have a single turn on the primary. In
that case, make a short tube that fills most of the inner
diameter of the toroid. Distribute the secondary winding
evenly over the toroid. That would minimize the leak
inductance.

You can even use the loop itself as primary, like in this photo...
In this case the transformer had only two turns as secondary, may be more would have resulted
in a greater efficiency...


 

--
73 Alberto I2PHD
Credo Ut Intelligam


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