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Re: Alarm system transformer + power supply (would both go bad atonce?)



On 12/5/2013 5:39 PM, Michael A. Terrell wrote:
>
> The Daring Dufas wrote:
>>
>> On 12/5/2013 6:03 AM, Michael A. Terrell wrote:
>>>
>>> The Daring Dufas wrote:
>>>>
>>>> Back in the 70's I made my own circuit boards on the kitchen table so I
>>>> could build my own solid state alarm controls. Most of what was around
>>>> was the old reverse polarity on a pair going directly to a central
>>>> station like the police/fire department. ^_^
>>>
>>>
>>>
>>>     That depended on the type of equipment at the local CO. Touch Tone
>>> phones had to be modified to work with the 1920s designed CO equipment
>>> in my home town before the DTMF to pulse converter would work.  They
>>> really went whole hog in their conversion. Only 100 DTMF lines were made
>>> available, out of 30,000 numbers.
>>>
>>>      We looked into manufacturing some alarm equipment, but the
>>> manufacture's liability insurance was over $1,000,000 a year at that
>>> time.
>>
>> Well heck, what can I say, I grew up in Alabamastan. The most advanced
>> thing to come out of my province was this little space program thingy. ^_^
>
>
>    It didn't 'come out', it ESCAPED!!!  ;-)
>
>     I spent a couple decades at Ft. Rucker, but the US Army claims it was
> only nine months. :(
>
>

You aired up the tires on the choppers? ^_^

TDD


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