I recently had occasion to prescribe a test for possible mis-wiring of encased sidewinders, which produced an unexpected benefit.
As suspected, the yanking of a ferrous hunk of something away from the sides while measuring a series connection and watching for similar ohmmeter response from both is a good way to determine proper relative polarity. However, I also discovered that it's a good way to see how much subtractive effect between coils (as in stacked configurations) exists. If you just read one coil and yank away from each side you can see how much opposite polarity influence there is on the combined system. Each coil will produce a significant deflection of the ohmmeter needle (for the recommended analog meter) when the ferrous material is yanked away from that coil's side. However, it will also produce a lesser deflection of opposite disposition when yanking the metal away from the opposite side. It's instructive to remember (as is the case with simple stacked coil arrangements) that this "subtractive" influence exists in the combined output of both coils.
So a sidewinder is essentially somewhat inefficient, not unlike a stacked coil configuration?
I say yes
Narrow aperture sidewinders with magnets in the coils work great.
Shielding foil helps keep them quiet.
Technicians Run the World, but Bankers, Lawyers, and Accountants, Take All The Credit!
Keep Rockin! B_T
Agreed. Keeping permeable material out of the cores minimizes hum.
I'm a bit of a shielding but, and that definitely helps keep out buzz.
There are currently 1 users browsing this thread. (0 members and 1 guests)