🚀 go-pugleaf

In <3558@dgis.daitc.mil> generous@dgis.daitc.mil (Curtis Generous) writes:
> I have an application where I need to activate a SPDT set of contacts
> such that the toggle action does not release after the coil voltage is
> removed.
> And I should then be able to toggle back the contacts with another pulse.
...
> If anyone knows of such a device, or can think of a way of building one....

Yes they exist, and Ive used them before.  Specifically, You want a single
coil latching relay.  The dual coil configuration is more common (where one
coil is energised to set, the other is energised to reset).  All Electronics
Corp. is a surplus parts dealer that I've dealt with many times.  They are
fairly reliable and represent their merchandise well (unlike some surplus
dealers). All Electronics Corp. sells a small assortment of latching relays:

Coil:    Action: Description:                              Part Number:  Price:
-------- ------- ----------------------------------------- ------------- -----
12 VDC   SPDT    Dual coil latching relay.                 LRLY-12DC     $2.50
650 Ohms         Operates on 7.5 to 26 VDC.
-------- ------- ----------------------------------------- ------------- -----
12 VDC   SPDT    Electrol latching reed relay. Sealed Case LRLY-121      $2.00
340 Ohms         1+9/16" X 1/2" with P.C Terminals.
bipolar          Latches open or closed when coil voltage polarity is reversed
-------- ------- ----------------------------------------- ------------- -----
12 VDC   4PDT    Aromat # NCP-JPL-2-DC12V   PC Board mount LRLY-124      $4.00
90 Ohms          flat pack.  1.5" X 1" X .429"
-------- ------- ----------------------------------------- ------------- -----
Single   1x SPDT Midtex 24 Vac coil.  3 sets of contacts.  IMRLY-24AC    $4.50
24 VAC   2x SPST Contacts open or close with each impulse. 
         10 Amps *** This is probably the one you want ***
-------- ------- ----------------------------------------- ------------- -----

All Electronics Corp:  1-800-826-5432 (from areas 818 & 213: 818-904-0524)
P.O.Box 567, Van Nuys, CA 91408 - Visa, Master Card, and Discover (no COD)

The prices and descriptions above are reprinted without permission from the
All Electronics Corp. Spring 1989 Catalog. - I hereby disclaim thee

- hope it helps - Dean Reece -
 ______________________________________________________________________
| Dean Reece     Member Technical Staff |"The flames are all long gone |
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