[MAMS] relay driver

[Danny Pease]

Zack, I couldn't remember the pinout off hand, had to dig it out. It uses 3
terminals and is pulse latched. I don't know if it would overheat if I were
to leave the DC on all the time or not, not too hard to check though.

Danny


-----Original Message-----
From: mams-bounces at mailman.qth.net [mailto:mams-bounces at mailman.qth.net] On
Behalf Of Zack Widup
Sent: Friday, September 07, 2012 1:17 PM
To: Mid-America Microwave Society
Subject: Re: [MAMS] relay driver

Hi Danny,

How does it latch? I have a HP33311C relay in my 24 GHz transverter. It is
configured by supplying 24 volts to one pin and grounding one of two other
pins. When one pin is grounded, it latches one way and then when the other
pin is grounded it latches the other way. You just have to make sure you
unground the one pin before grounding the other pin. Easy to make it work,
as all I have to do is use another smaller relay to switch it back and forth
between transmit and receive. My transverter for that band is full of relays
anyway and I had a spare set of double-throw contacts available on one.

73, Zack W9SZ


On Fri, Sep 7, 2012 at 12:47 PM, Danny Pease <dpease at adams.net> wrote:

> I picked up a two coil 12 volt latching DowKey SMA relay and am 
> looking for simple suggestions for using it or I would be glad to 
> trade it for a non latching SMA relay, 12 or 24 volt.
>
> Danny NG9R
>
>
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