I have a unopened can that is about the size of a large can of beans. Its marked fragile, Delicate Instrument Handle With Care. Do Not Open Until Ready To Use…One Part 2J1F1 Selsyn for turret on P61 plane for sights on A26 & Bb29 planes Packed Dec 18, 1944…Its made by General Electric.
Can anyone tell me exactly what I have, and if its worth anything??
Thanks Goldygirl
By: Moggy C - 14th August 2006 at 10:00
OK, here’s the image.
Any clues anybody?
Moggy
By: Moggy C - 13th August 2006 at 00:11
If you need to post the picture and are having trouble, PM me.
A synchro is a type of rotary electrical transformer that is used for measuring the angle of a rotating machine such as an antenna platform. The primary winding of the transformer, fixed to the rotor, is excited by a sinusoidal electric current, which by electromagnetic induction causes currents to flow in three star-connected secondary windings fixed at 120 degrees to each other on the stator. The relative magnitudes of secondary currents are measured and used to determine the angle of the rotor relative to the stator, or the currents can be used to directly drive an electric motor that will rotate in unison with the synchro. In the latter case, the whole device is also called a selsyn (a word made up from self-synchronizing).
The synchro was developed during World War I as part of a servomechanism that was used to synchronise the movement of a gun turret to a control dial. Synchros are also used extensively to remotely drive indicator gauges, such as wind direction indicators.
Moggy
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August 12, 2006 at 8:24 pm