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Yeah, I mean people have already built modules, for every type of circuitry application. That's why I was saying it's mostly modular now. Yeah it's not fun, it's just cheaper and easier, and you get the same product.
But what you do is you build your own appliances out of the modules. That's where you get into the DIY stuff. Just like people build their own computers out of the modular components. Just like how I build my own solar system out of the modular components.
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That's what I'd be doing if there was something to build. This is just plugging a lamp in and flipping the switch. lol
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I'm damned sure not gonna buy a beefy power supply like the one in the photo for a project like that. If it draws that much current, it'll probably run my electric bill sky high.
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(06-27-2023, 02:17 PM)user328 Wrote: ... it'll probably run my electric bill sky high.
Bell System customers used to complain about having to use their own electricity to power the miniature dial lamps in those Princess phones. lol
I'm gonna get a cheap 9VDC wall wart and wire it to the yellow and black wires in a regular telephone cable so it can run the dial lamps in both rooms.
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Yeah true. Maybe get some USB lights instead.
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(06-27-2023, 02:25 PM)user328 Wrote: I'm gonna get a cheap 9VDC wall wart and wire it to the yellow and black wires in a regular telephone cable
That's actually exactly what a dc power supply is. The phone just has a transformer coil in it. So you would not save any power, and it would not be as safe, without fuses and what not.
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Or actually maybe you are right, I guess phone are powered off the phone jack itself. That's nuts. I didn't know that.
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This phone doesn't have a transformer. The Princess didn't even have a ringer at first because Western Electric didn't have one small enough to fit in it. You either had to hook an external ringer up to it, or have a second phone in the house with a ringer.
The wall wart transformers they did use with the Princess were just transformers. The lamps ran on AC. I think a DC adapter will be safer. I've actually done this before, and never had any issues with it. The adapter just has to supply enough current.
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Yeah. Charge up a lithium 12v battery bank, with a wall adapter.
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Or just one of those cell phone portable power banks I mean.
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(06-27-2023, 02:34 PM)Sagebrushdan Wrote: Or actually maybe you are right, I guess phone are powered off the phone jack itself.
There's 48VDC on the voice circuit (red and green wires) when the phone is off the hook. Very old phones from the 1800s had big dry batteries. Later, the exchange would send the 48VDC over the phone lines to every station.
The signal that rings the bell is 20Hz AC at 90V. It moves an electromagnetic hammer back and forth between two bells 20 times a second. Except the Princess ringer only had one bell on account of its size. That's why it sounds thin compared to the standard 500 series phones most people had.
The same 90VAC signal is still used to ring a remote station, even though it's converted to an electronic noise from a low-voltage chip in modern phones.
On a rotary dial, the number was sent by disconnecting and reconnecting the voice circuit from 1 to 10 times within a fixed interval, depending on the digit dialed. A governor on the dial made it take the same amount of time to dial any digit, regardless of how far the dial had to rotate. The pulses sent down the wire would move electromagnetic switches at the exchange to connect a route to the receiving end.
All of these signals were added at various times as technology developed. It's really quite amazing, considering this all happened before electronics existed. It's also cool that the same antiquated signalling system continued to be used as first analog and then digital electronics replaced the old electromechanical systems.
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(06-27-2023, 02:55 PM)user328 Wrote: antiquated signalling system
It's often called "BORSCHT," for Battery, Over-voltage, Ringing, Signaling, Codes, Hybrid Testing.
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Yeah, I saw that when I checked it out. They are 48V DC outlets on the phone jacks, powered by the phone companies I guess.
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The problem with sending DC over long wires in the era before electronic amplification was that the voltage dropped so much by the time it got to the other end that you couldn't hear what the other person was saying. That why they yelled into the phones.
That's also why our power grid is AC, not DC. Tesla was right, and Edison was wrong.
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Yeah, suck it Edison!
DC is the better power source for small scale stuff. It is remarkable efficient.
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This is a work in progress that I'm posting here for critique/suggestions. Feel free to borrow any parts that may be relevant to your own service.
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Dang, Dev, those rules/terms give me a girly hard-on.
Now get the site open and ready so Dan and Fung can come live with you.
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Did you catch that bit I just added?
The Rules Wrote:Use of the service by any current or past moderator of Twitter or Facebook is strictly prohibited.
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BAHAHAHAHAHA oh daaaamnnn.
Lol, makes me wanna have fun with my own rules/terms instead of being so basic and vanilla.
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You should!
You can copy the whole thing if you want.
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