Re: FS: Transco Y Relay
There could be a case for evaluating that in advance (and maybe with any model?), i.e. powering it up on the bench and checking the temp. rise. It's possible that's how mine failed in it's previous life wherever. It's on a cad-plated steel plate, but not anywhere near as big as below.
From: Paul paul@... [ukmicrowaves]
Sent: Fri, 18 Mar 2016 18:21
Subject: Re: [ukmicrowaves] FS: Transco Y Relay
Follow up to the message I sent a few minutes ago. I also found this in the instructions for the JWM sequencer, "A word of caution related to RF relays that are always in a constant energized state. Most of these relays are not designed to be energized for long periods of time, and will require a good heatsink to dissipate the heat that can build up. Transco “Y” relays for example can be energized for several hours at a time when mounted to an aluminum plate about 12 inches square or so, by ¼ inch to 3/8 inch thick. To provide the best possible heat transfer, use transistor thermal heatsink compound when you mount the relays to the aluminum plate."
On 17-Mar-16 16:47, ALANNOTTAGE@... [ukmicrowaves] wrote: