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Re: Harmonics and Relay Replacement


 

The contacts are below, close to the ground plane possible less coupling and short so less inductance.

Raj

Pic: from the net.

Emacs!

At 09-10-18, you wrote:

Pictures are always nice, Glenn.

Since most of these larger relays have the long armatures which run parallel to the coil and the coil is not shielded? (right ?), there would be RF coupling between the armature and the coil. It would also seem that, for a given voltage, higher current relays would imply larger wire, fewer turns, and less inductance for Port to Port coupling (right ?).

Can't do much to reduce inner relay coupling but you could reduce relay to relay coupling by using a small RF choke (100uH) in the both existing relay coil leads. I like the WireWound ones from Bourns (CM322522-101K1).

73 Kees K5BCQ

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