Looks like someone who is getting into "analysis paralysis", where the more study is done the more confusing it becomes.
Making up your own terminology doesn't help either, as it just confuses the issue and adds more confusion later. Analog DC is an oxymoron, as DC control is by its very nature analog. Digital DC just adds to the confusion, as the two technologies are mutually exclusive.
Whatever he wants, it looks like a custom solution...
Yes, I believe I too have had conversations on this forum with that poster and he is refering to "analog direct current".
Why does my spell check only work on some parts of this forum/web site?
Sheldon
Analog Train Control. Sounds like something a LION would build. LION has Analog Automation on the layout of him.
Think of it like a subway train (no wait, it *is* a subway train). The power is always on, the LPP driving the train slows down and then stops at the stations. How did he do that what iwth no computers, no throttles, no brakes, no reversing switches? Sub stations (ok, I only have one 10.2 volt x 10 amp regulated power supply) keep track power steady. Left rail is GROUNDED, right rail gets the power from the sub station, just as if it were the third rail in the city.
The Power rail is gapped, and the gaps bridged with 5.1 ohm resistors. The train slows down as it approaches the stations. The last gap is not bridged, so the train stops. A time clock pulls a relay across the exit gap and the train starts, it picks up speed as it crosses more bridged gaps until at last it is drawing full voltage again.
That'a all it is. Real simple. LION just watches the trains of him run and run and run. Him operates the tower at 242nd Street. Just that, nothing more.
Well, him did add hundreds of relays, but that is for the signal system, and it will prevent the clock from releasing a train if the next station down the line is already occupied, but that is a different system entirely.
Did I say that there was no reversing switch? Subway trains do not go backwards, the signal system does not permit this, and there is another train only a few seconds behind yours. And a T/O who backs his train without permission is also without a job.
Anyway. The LION likes what him built, and so him never gets tired of telling you about it. As far as ADC goes, LION been building trains for 50 years: Hime never herd of it. But then the only herds him is interested in is of Wildebeests.
ROAR
The Route of the Broadway Lion The Largest Subway Layout in North Dakota.
Here there be cats. LIONS with CAMERAS
richg1998 Another attempt to start a discussion. lol Rich
Another attempt to start a discussion. lol
Rich
Nobody should doubt how perceptive you are, Rich! LOL!!!
NP 2626 "Northern Pacific, really terrific"
Northern Pacific Railway Historical Association: http://www.nprha.org/
NP2626 Here is one of the places I have seen ADC used. The referenced term is in the first paragraph of this thread: http://cs.trains.com/mrr/f/744/t/240200.aspx
Here is one of the places I have seen ADC used. The referenced term is in the first paragraph of this thread:
http://cs.trains.com/mrr/f/744/t/240200.aspx
If you read through that thread, you will see the OP isn't familiar with many terms used. I believe he came up with that on his own assumption of there being DIGITAL DC versus ANALOG DC ....
Mark.
¡ uʍop ǝpısdn sı ǝɹnʇɐuƃıs ʎɯ 'dlǝɥ
It was nice to hear about Sheldon's system again.
Joe
If you ever fall over in public, pick yourself up and say “sorry it’s been a while since I inhabited a body.” And just walk away.
Maybe it means Anti Direct Current
Jim
NP2626 betamax Where did you see the ancronym "ADC"? "I do not run DCC, i still use ADC".
betamax Where did you see the ancronym "ADC"?
Where did you see the ancronym "ADC"?
"I do not run DCC, i still use ADC".
It would be really useful to know where that quote came from? I suspect it might have been right here on this forum? - tomikawaTT, aka Chuck?
But I do suspect Betamax is correct and the user is refering to "analog direct current", which would be differernt from my control system since I use digital direct current - my Aristo wireless throttles use square wave full voltage pulse wave modulation just like a DCC decoder to control motor speed.
Analog would imply simple varable voltage regulation of speed.
My control system had lots of letters and fancy names long before DCC came along - it was called MZL control by its creator in the 1970's, and is part of a group of control methods called "Advanced Cab Control", or ACC, by Paul Mallery.
On a related note, if anyone has seen the latest copy of Model Railroader, there is an piece about the control system on the Elmhurst Model Railroad Club - it is basically a digital touch screen version of my system, done with PLC's rather than relays.
But of course they still needed relays for the power distribution.
They are mixing DCC and DC at the same time - I could do that as well, just like they are doing.
NP2626"I do not run DCC, i still use ADC".
is there a difference between DC and ADC? is there such a thing as an ADC throttle?
i found nothing to answer the question when I googled ADC throttle and variations
greg - Philadelphia & Reading / Reading
It could mean a number of things, including Analog Direct Current. The terms DC and DCC could be confusing so it may be an attempt to lessen confusion.
The typical meaning in the digital world is analog to digital converter, a device that converts an analog signal to digital values.
I’m sure someone will take the above as a serious question and feel a need to explain the reason for the change to all of us of less tech. savy!