jimk
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Posts: 30 
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Post by jimk on Jun 9, 2018 18:04:59 GMT
I've been thinking about this for some time now, and while I'm pretty sure I know what I want to do, I just don't know where to get the right parts.
Here's the deal: I'm restoring a '55 Rockola 1452, and I want to modify (or "add to") my Free Credit circuitry by adding a set of Momentary relay contacts that will be wired in parallel with the Free Credit switch. However, I'd like this relay to be remotely controlled, by a small key fob or some such thing, as I don't want to modify the Accumulator for constant Free Credit play, and I really don't want to drill a hole in the unit somewhere to install a (so-called) "hidden" switch.
Has anyone ever done this, and if so, can you point me in the right direction where I can source a momentary, remotely controlled, SPST isolation relay, something that isn't powered by 12 VDC (e.g., car alarms)?
Thanks!
Jim
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Post by Ron Rich on Jun 9, 2018 22:43:53 GMT
Hi Jim,
Not exactly sure about the power supply you want to use ?? Most cleaver one I saw (I think), was powered by a "clapper" --Guy just clapped 3 times to get a quarters worth of credits -- Ron Rich
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jimk
New Member
Posts: 30
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Post by jimk on Jun 10, 2018 2:02:09 GMT
Ron,
That's kinda-sorta the general idea, but The Clapper, by "definition" ("Clap On, Clap Off") doesn't offer Momentary operation. I don't have my wiring diagram right here with me, but I seem to recall that there's a coil in this circuit that, when said circuit is incorrectly modified, can burn-out when constantly energized. The Clapper could, theoretically, replicate that ("Clap On.........") and then no "Clap Off".
With regards to power supply, ideally I'd like to simply tap into the 115 VAC line voltage somewhere, but the more I search, the more it looks like I may have to buy a DIN-mounted power supply and use a 12 VDC car alarm relay.
But I'm still looking!
Jim
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Post by Ron Rich on Jun 10, 2018 13:19:41 GMT
Jim,
You are probably correct-- I know he modified that "Clapper"--but don't recall how-and unfortunately I can no longer axk him, as he passed away several years ago--Ron Rich
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jimk
New Member
Posts: 30
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Post by jimk on Jun 11, 2018 14:51:24 GMT
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jimk
New Member
Posts: 30
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Post by jimk on Jun 21, 2018 18:48:38 GMT
I'm pretty excited about this idea!
Backing-up a bit...
Yesterday I had lunch with a retired EE friend of mine, and he asked to see how my 1452 project was coming along, and whether he could stop-by for a quick look-see. Afterwards we went back to my house so I could give him the "nickel tour".
When I finally got around to asking him about this idea of mine (the subject of this Thread), he responded, "Why don't you use a magnetic reed switch?"
Me: "A what?"
Apparently there is a switch that operates via nothing more than a magnet, and if I can find a switch "sensitive" enough, or a magnet strong enough, I may be able to mount this switch inside the cabinet in such a way that by simply passing a magnet over the spot where the switch is located- Voila! A free credit!
I have done absolutely no homework on this yet, but here's a link to the general idea of this switch:
I'll update this Thread once I've looked into this a bit more.
Jim
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Post by Ron Rich on Jun 21, 2018 23:17:47 GMT
The problem you will have with a mag reed sw. is that they require a fixed "arch", of the magnet, to function reliably. One "pass" of the magnet, without that "arch", is liable to close/open/close the switch, one time, or more, or not at all. Ron Rich
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phillg
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Learning on the job...
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Post by phillg on Jun 27, 2018 2:21:06 GMT
The problem you've got is that devices like clappers, etc. are electronic devices that run on 5/12v DC so you'd have to install a transformer and bridge rectifier to get the correct power for the circuit.
The Reed switch is an electric solution (just make sure you get a 115v component). However, you're going to need a very strong magnet to get through the cabinet!
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