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LVRALPH
Fireman
5430 Posts |
 Posted - 05/03/2010 : 2:06:29 PM
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It is in simple non technical english! You just have a bad attitude. See if you can get some 1" plywood or double up on the 3/4. |
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LVRALPH
Fireman
5430 Posts |
Posted - 05/03/2010 : 4:52:25 PM
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Here Hueber. This is from a post today on the Digitrax site for DS-64's. Use your Rosetta stone on this. I still don't know what he said.[:-bigeyes]
The maximum voltage sepcs WOULD NOT be the same in either case. A DCC track voltage of 22 volts, once passed through the bridge rectifier and filter caps would give you ~20.5 volts due to the voltage drop of the rectifier diodes. A sinewave AC voltage of 22 volts once passed through the bridge rectifier and filter caps would actually give you a DC voltage of ~29.6 volts. The reason for this has to do with the shape of the sinewave and how AC voltages are normally represented. AC voltages are normally expressed by the Root Mean Square voltage of the sinewave. When the AC voltage is rectified and filtered, you get the peak to peak voltage, which is approximately 1.414 x RMS voltage. 22 * 1.414 - ~1.5(diode drop) = `29.6 volts. The
DCC voltage, although it is still AC does not have this same result because it is a square wave. For a square wave AC voltage, the RMS voltage and the peak-to-peak voltage are equal.
For the sake of comparison, you can ignore the ~1.5 volt drop of the diodes, since the power passes through them whether AC or DCC. A 16 volt AC input would be the equivalent of a DCC input of 16 * 1.414 = 22.6 volts, above the 22 volt limit
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MarkF
Engineer
USA
9276 Posts |
Posted - 05/03/2010 : 11:48:01 PM
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Don't let my silence fool you. I'm still following along Ralph. Or should I say, I'm still reading this thread. Following along would imply that I understand it! [:-boggled]
I'm sure glad your getting the hang of all of this so when it's time to do mine, I know who to call!
Hueber, just stay behind the plywood. |
Mark
See my homepage at http://home.comcast.net/~prrndiv/
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slimjerkins
Fireman
USA
1271 Posts |
Posted - 05/04/2010 : 10:18:06 AM
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But Ralph understands this kind of stuff without any problem:
quote:
The payment of the special tax imposed, other than the tax imposed by section 4411, shall not exempt from an additional special tax the person carrying on a trade or business in any other place than that stated in the register kept in the office of the official in charge of the internal revenue district; but nothing herein contained shall require a special tax for the storage of goods, wares, or merchandise in other places than the place of business, nor, except as provided in this subtitle, for the sale by manufacturers or producers of their own goods, wares, and merchandise, at the place of production or manufacture, and at their principal office or place of business, provided no goods, wares, or merchandise shall be kept except as samples at said office or place of business.
[:-banghead]
-slim |
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MarkF
Engineer
USA
9276 Posts |
Posted - 05/04/2010 : 1:07:51 PM
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| Yeah, go figure! Personally, I think he's pulling our leg! Did you see that collection of resistors? [:-bigeyes] Us 'average' guys don't have stuff like that laying around. |
Mark
See my homepage at http://home.comcast.net/~prrndiv/
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LVRALPH
Fireman
5430 Posts |
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LVRALPH
Fireman
5430 Posts |
Posted - 05/08/2010 : 7:19:25 PM
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Big day today on the LVRR. My bud Hueber and I headed down to an estate sale. The sale was for a very famous model railroader named Bill Gruber. Bill modeled the Reading and was featured many times in the magazines mostly RMC. He had dozens of articles published. I was fortunate to meet Bill at some ARHS meetings and conventions.
He had installed CMRI on his layout back in the mid 80's and built a beautiful CTC machine. Well my partner in crime Hueber bought it and it now resides in our formal living room (which is just a big office and storage room.)
It will be connected to the parts I just acquired and run my RR from upstairs.
Here is a picture of the back with the snake of wires attached.
I have some work ahead to figure out the circuits on the back and how much wiring we can save.
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Edited by - LVRALPH on 05/11/2010 7:30:41 PM |
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MarkF
Engineer
USA
9276 Posts |
Posted - 05/08/2010 : 9:52:50 PM
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| I was glad to see that you got that Ralph! I always admired his CTC machine as he did a great job building it. The desk itself is well done! Now we get to see Hueber put his 'artwork' to good use! |
Mark
See my homepage at http://home.comcast.net/~prrndiv/
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LVRALPH
Fireman
5430 Posts |
Posted - 05/09/2010 : 2:35:29 PM
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Thanks Mark. At least we will keep it in the Anthracite RR family. I need to find a way to Honor Bill. I was thinking of having some lind of plaque made in his honor.
Well, I started getting into the business end of the machine last night. I need to figure out the circuitry they have so we can hopefully use most of it.
An analysis of the bottom terminal blocks indicated that wires on the left went to the giant cable snake attached to the machine, those on the right went to the CTC machine component. I was correct, and after removing all the left hand wires, the snake sat in my basement and I could see what I was doing.
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Edited by - LVRALPH on 05/09/2010 2:36:50 PM |
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LVRALPH
Fireman
5430 Posts |
Posted - 05/09/2010 : 7:03:33 PM
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Progress on the CTC board. I have identified and operated every LED on the panel. Now to figure out the switch and signal circuits.
I have to get Hueber over here. The more I study the track plan it seems we would be able to delete and add tape to come up with my existing plan. We might have to delete and move a few LED's and switches, but it would be so much easier than removing everything and re adding to a new panel. Plugs could be put in holes where we remove stuff. This would save us lots of time! |
Edited by - LVRALPH on 05/09/2010 7:05:17 PM |
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jatravia
Fireman
USA
2521 Posts |
Posted - 05/09/2010 : 8:59:22 PM
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Nice Ralph. I'm glad you guys were able to pick that up. I can't wait to see it operation.
Joe <>< |
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dnhman
Fireman
USA
1049 Posts |
Posted - 05/10/2010 : 09:13:12 AM
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| Ralph, Great find,, I am watching with much interest on how you will be able to adapt the exisitng mechanics and electronics to your layouts plan... |
Cheers!, Joe |
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LVRALPH
Fireman
5430 Posts |
Posted - 05/11/2010 : 7:26:41 PM
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Next, I soldered in the IC holders. Carefully insert these in the holes, making sure no pins get bent in or out. Solder 1 pin at each end making sure the socket sits flat, then solder the rest of the pins.
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Edited by - LVRALPH on 05/11/2010 7:29:26 PM |
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LVRALPH
Fireman
5430 Posts |
Posted - 05/11/2010 : 7:33:03 PM
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Finally, the rest of the parts were inserted, the capacitors, LED's and header pins for conections.
I then sprayed some flux remover on the back of the board, scrubbed it real good then sprayed some more to get it really clean. I then inspected with a critical eye under magnification every solder joint. When I was satisfied, I then inserted the IC's and this puppy is done.
I asked on the CMRI group if there were any tests that could be performed to check this out, but they said there were none.
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Edited by - LVRALPH on 05/11/2010 7:36:51 PM |
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MarkF
Engineer
USA
9276 Posts |
Posted - 05/12/2010 : 12:43:26 AM
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| Nice work Ralph, but ah, at the risk of sounding stupid, what does it do and how do you know if it's working? [:-boggled] |
Mark
See my homepage at http://home.comcast.net/~prrndiv/
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Signaling my model railroad
