Re: FS: Transco Y Relay
Andy, Peter - that is fascinating stuff. I just couldn't fathom how it wouldn't hum and chatter!
From: Peter Torry peter.torry@... [ukmicrowaves]
Sent: Fri, 18 Mar 2016 14:12
Subject: Re: [ukmicrowaves] FS: Transco Y Relay
Digging back into my memory I recall that AC relays used a laminated iron core to reduce Eddy current losses and hysteresis losses. To avoid chatter and humming of the armature part of the pole face had a shading ring fitted. The flux created in this ring, usually copper, is phase shifted relative to the flux in the main core so preventing the main flux from periodically going through zero.
Its a long while since I had a connection with relays rather than just using them.
On 18/03/2016 12:37, Andy Talbot andy.g4jnt@... [ukmicrowaves] wrote: