[Amps] SB-220 Xformer readings

[Jim]

Agreed. That is why a standard 100 watt light bulb in series with the 
windings works great. If it is really shorted, then it just glows 
brightly. If its ok, it glows depending on the load.


Thanks
73
Jim W7RY

On 1/6/2019 8:38 AM, gudguyham--- via Amps wrote:
> With such low resistance it would be almost impossible to detect a dirt between individual windings but easy to detect sorts between primary and secondary and ground etc.
>
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>   On Sunday, January 6, 2019, Dennis W0JX via Amps <amps at contesting.com> wrote:
>
> Joe,
> I had my SB-220 opened up for other work and took the following readings:
>
> HV secondary winding: approximately 11.8 ohms
>
> Primary #1 Blk to Yellow: 1.1 ohms
>                    Blk to Blk/Yellow: 1.0 ohms
>      
> Primary #2 Blk/Green to Blue: 1.1 ohms
>                    Blk/Green to Blk/Red: 1.0 ohms
>
> Your readings may vary somewhat depending on your digital meter and also how long you let the readings stabilize as the windings "charge up."
>
> I also have a Peter Dahl hypersil replacement #SB-220-3 for my SB-220. The secondary measures 10.8 ohms on this transformer which has a higher current rating.
>
> 73, Dennis W0JX
>   
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