Latching Relays - Startup and shutdown switch

[marvin harten]

Hi-
In a back issue of the SCR, there was a description and drawing of 2 relays set up as latching devices, operated by magnetic switches, to supply and shut off power to the WTC.
Does anyone rember the issue of the SCR or have the drawing?

Thanks

[ramius-ii]

Hi Marvin]Ramius-ii@earthlink.net.

Ed http://www.subcommittee.com/forum/icon_smile.gif

Hi Marvin]Ramius-ii@earthlink.net.[/email]

Ed

[ramius-ii]

There's no reason you could

There's no reason you could not do it with only one relay!

Ed

[koeze]

Use a bistabile relais and

Use a bistabile relais and two reedswitches. Connect the power via one reed switch to one coil of the relais, connect the power via the other reed switch to the other coil.

If a magnet is held close the a reed switch it closes allowing current through. The relais switches. If the magnet is held near the other the relais switches the other way. No need for a relaiscoil to be permenently active.

EJK

PS See Submarine Technology by Norbert Nruggen for more of these solutions.

[marvin harten]

The drawing that I am

The drawing that I am looking for may be in Vol. 51 or 53 of the SubCommitte Report. If anyone can find the schematic of the 2 relays, I would appreciate hearing from them. Thanks.

[rockpile]

]

[color=#000F22]]

[JWLaRue]

Ahhh....that was the just the

Ahhh....that was the just the hint that I needed to help Marvin. I was looking through all the articles, but not the columns!!

Is this the diagram?



-Jeff

[raalst]

just a thought ]

[color=#000000]just a thought ]

[ramius-ii]

Hi Guys]

[color=#000000]Hi Guys]

[marvin harten]

Hi-

Thanks to all of you

Hi-

Thanks to all of you for your help. I appreciate the time and effort to get the information for me.

Marvin