[Jukebox-list] AMi Pluse system

[Karl]

Ron
Thanks again...the more info I have, the better chance I have of stumbling 
onto the problem <grin>


Karl
Columbus Coin-Op Shop
Columbus, GA 31903
(706) 507-2963
2061 S. Lumpkin Rd.





Columbus, GA 31903
(706) 507-2963
----- Original Message ----- 
From: "Ron Rich" <ronnnrich at yahoo.com>
To: "Jukebox mailing list" <jukebox-list at lists.netlojix.com>
Sent: Wednesday, January 10, 2007 12:44 PM
Subject: Re: [Jukebox-list] AMi Pluse system


> Another thought---the "sprague relay" (SHOULD--they tend to 
> "slip",sometimes) mechanically "locks" the gears, and thus the two wipers 
> into the correct position until after the selection hammer coil is fired. 
> Ron Rich
>
> Ron Rich <ronnnrich at yahoo.com> wrote:  Karl,
> Just going to add one thing that may help-- Where David says "-- each of 
> the two contacts are aligned---" ( this causes the "sprague" relay to 
> energize, which starts the selection motor) "now the the selection arm 
> starts to rotate--" Otherwise it's a much better explaination then 
> mine--way to go! David Ron Rich
>
> Karl wrote:
> David
> Sorry but the telephone analogy doesn't help.....hehehe. Your explanation
> does though. Between you, Ron, Wes, and the book, my thick skull is
> beginning to absorb it. Thanks
>
> ----- Original Message ----- 
> From: "David Breneman"
>
>>
>> --- Karl wrote:
>>
>>> I have the manual but I am having a hard time understanding
>>> the "Pulse" concept. It sounds like it allows the converter to
>>> rotate longer or shorter depending on the letter/number chosen??? I
>>> admit this is probably fairly elementary to those who know these
>>> older jukeboxes, but I don't.
>>
>> So if I was to analogize it as a two-dimentional Strowger
>> telephone switch, that wouldn't help? :-)
>>
>> The selector sends a series of pulses. Just square-wave
>> AC pulses. I assume the H is the same as the G. So A
>> is one pulse, B is two pulses, etc. The selection
>> receiver rotates a rotary switch via a ratchet/pawl
>> mechanism, one notch for each pulse. Then there's a
>> pause between pulses, so the receiver now switches to a
>> second ratcheting rotary switch. Which does the same
>> thing for the number part of the selection. 5 is five
>> pulses, 8 is eight pulses, etc. When the pulses stop,
>> each of the two rotary switches is aligned over a set
>> of contacts unique to that selection. Now the selection
>> arm starts to rotate over the pinbank. It also has two
>> rotary switches connected to it. When those switches
>> receive voltage from the first two switches, it means
>> that the selection arm is over the pin corresponding
>> to the selection made. The pin is pushed, the first
>> set of rotary switches is released, and the machine is
>> ready to accept another selection.
>>
>>
>> David Breneman david_breneman at yahoo.com
>>
>
>
>
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