Re: Topband: transformers, teflon tubing

2017-04-29 Thread P H via Topband
Thank you, Gentlemen Piotr, SP2BPD _ Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: transformers, teflon tubing

2017-04-28 Thread JC
Of P H via Topband Sent: Friday, April 28, 2017 9:14 AM To: topband@contesting.com Subject: Topband: transformers, teflon tubing I've noticed use of teflon tubing in a Flag family transformers. Apart from low losses: is there another reason to use teflon coated wires? Regards Piotr, SP2BPD

Re: Topband: transformers, teflon tubing

2017-04-28 Thread Mike Waters
73 material is conductive. The holes are lined with insulation to prevent the enamel coating on magnet wire from scraping off and shorting to the core as it is being pulled through the holes. Also, it is easier to get more turns in a winding using Teflon wire vs. some other types. The latest

Re: Topband: transformers, teflon tubing

2017-04-28 Thread Tim Shoppa
Enamel-insulated magnet wire easily gets knicked going around the sharp corners of a core. Although the core isn't very ohmically conductive, a knick at a corner is enough to affect the operation of the transformer. I think the old Clifton Laboratories page had a little section of measurements of

Re: Topband: transformers, teflon tubing

2017-04-28 Thread Augie "Gus" Hansen
Minimize inter-winding capacitance. 73, Gus Hansen KB0YH On 4/28/2017 7:14 AM, P H via Topband wrote: I've noticed use of teflon tubing in a Flag family transformers. Apart from low losses: is there another reason to use teflon coated wires? Regards Piotr, SP2BPD _ Topband

Topband: transformers, teflon tubing

2017-04-28 Thread P H via Topband
I've noticed use of teflon tubing in a Flag family transformers. Apart from low losses: is there another reason to use teflon coated wires? Regards Piotr, SP2BPD _ Topband Reflector Archives - http://www.contesting.com/_topband