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Posted by Alexander Thesoso on May 11, 2008, 6:15 am
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DoN is absolutely correct.
I was careless, hasty, and lazy. I didn't read his full message. I read
down to the second divider bar and charged off with an unnecessary message.
If I had been courteous enough to read a little further, I'd have seen his
later links and would have kept my big yap shut.
I apologize to the group, DoN, and RH for my bad message and impolite
behavior.
Thanks to RH, DoN, and everyone else.
>> 1300 Relay or sounder? I'm not fool enough to argue with the strong
>> assertion that this is a relay and not a sounder... but I've a question
>> and
>> a quibble...
>>
>> Relays are usually 4-terminal (possibly 3-terminal) devices, having input
>> and output. Sounders are usually 2-terminal having audio output. I
>> agree
>> that DoN's reference includes a repeating sounder/relay, but it has at
>> least
>> one extra terminal. The thing (1300) doesn't seem to have more than 2
>> terminals, with the other screws seeming to be adjustments (front-stop,
>> back-stop, pivot-bearing and tension). The question is, where are the
>> extra
>> terminals needed to make a relay?
>
> If you had looked at the final images in my article (which I
> pointed to at the beginning once I found them), you would have seen
> photos of another one (same model number on the maker's plate) which
> included angles which showed that there were two more terminals hiding
> behind the relay coils as photographed in the puzzle set. I'll leave
> those URLs quoted at the end, after trimming out all of the others.
> (And -- RH actually used a link to one of those photos in his correction
> to the "answers" page.)
>
>> The quibble is that, in DoN's reference, there are a variety of sounder
>> impedances listed, going up to 400 ohms, and including the value given
>> for
>> the thing.
>
> Granted -- I saw those other impedances in what my search turned
> up The higher impedances would probably have operated at higher voltages,
> and resulted in less wear on the key's or relay's contacts since the
> current would be less (though more arcing when the circuit was opened.)
>
> My comment about the impedances was based on the posted link to
> the sounder and the posted impedance listed on the relay's nameplate. I
> should have edited that out when I found more data, but it was late and
> I wanted to finish the newsgroup and go to bed. :-)
>
> Enjoy,
> DoN.
>
>>
>
> [ ... ]
>
>>> Aha! Here it is:
>>>
>>> http://home-and-garden.webshots.com/photo/2566021300037774971ZPTfxd
>>>
>>> http://home-and-garden.webshots.com/photo/2028378440037774971sWUbJG
>>>
>>> http://home-and-garden.webshots.com/photo/2230641500037774971ZslIXZ
>>>
>>> The last of those photos shows the model plate -- which matches.
>>>
>>> And -- the photos show the extra two terminals which I predicted.
>
>
> --
> (too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html
> --- Black Holes are where God is dividing by zero ---
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> assertion that this is a relay and not a sounder... but I've a question and
> a quibble...
>
> Relays are usually 4-terminal (possibly 3-terminal) devices, having input
> and output. Sounders are usually 2-terminal having audio output. I agree
> that DoN's reference includes a repeating sounder/relay, but it has at least
> one extra terminal. The thing (1300) doesn't seem to have more than 2
> terminals, with the other screws seeming to be adjustments (front-stop,
> back-stop, pivot-bearing and tension). The question is, where are the extra
> terminals needed to make a relay?