Search found 907 matches

by Brian
Thu Jun 11, 2020 7:33 pm
Forum: Other Electrical/Electronics
Topic: Gaugemaster GM500 upgrade?
Replies: 10
Views: 318

Re: Gaugemaster GM500 upgrade?

If you're using 12 volt DC supply then usually a 1K0 (1000) Ohm series resistor will give a good general current limiting. Higher Ohm values such as 2K0 or above won't hurt. but they will though reduce the LEDs brightness. The resistors have nothing to do with GM500 or any other form of switching. T...
by Brian
Thu Jun 11, 2020 5:28 pm
Forum: Other Electrical/Electronics
Topic: Point lever/motor common return to CDU
Replies: 2
Views: 89

Re: Point lever/motor common return to CDU

There is no reason why a common return to all motors cant be used. It saves wire! All the motors return wire connect onto this one common return wire, whether those connections are soldered or by terminal blocks or Wago connectors. This common return wire then goes directly to the CDU Negative Outpu...
by Brian
Thu Jun 11, 2020 5:09 pm
Forum: Other Electrical/Electronics
Topic: Gaugemaster GM500 upgrade?
Replies: 10
Views: 318

Re: Gaugemaster GM500 upgrade?

You must have as a minimum one resistor per signal head therefore 2 heads = 2 resistors minimum. There is really no need for these resistors to be in the feed wires, which then means you'll need four resistors. IMO that is just wasteful and unnecessary. As only one LED can illuminate at any one time...
by Brian
Thu Jun 11, 2020 3:00 pm
Forum: Other Electrical/Electronics
Topic: Gaugemaster GM500 upgrade?
Replies: 10
Views: 318

Re: Gaugemaster GM500 upgrade?

Hi Brian. Right I think I have got it. Yes I will have to switch wires around as I need the right hand to be on green, left hand red, changing when I switch point. I will be using the signals for the train leaving the station pull in, to get back onto the main line. Thanks, I will probably need a f...
by Brian
Thu Jun 11, 2020 12:14 pm
Forum: Other Electrical/Electronics
Topic: A/C-D/C adaptor
Replies: 11
Views: 292

Re: A/C-D/C adaptor

Minimum I would use is a 1.0Amp supply. Many ready made DC train controllers have a 1.0 or 1.2Amp overload cut out . (for N and OO)
by Brian
Thu Jun 11, 2020 12:07 pm
Forum: Other Electrical/Electronics
Topic: A/C-D/C adaptor
Replies: 11
Views: 292

Re: A/C-D/C adaptor

brian1951 wrote:
Thu Jun 11, 2020 12:05 pm
It 14v and 12VA
0.857 Amp so less than 1.0 Amp
Divide VA into rated volts = 12/14 =0.8571428 Amp
by Brian
Thu Jun 11, 2020 12:03 pm
Forum: Other Electrical/Electronics
Topic: A/C-D/C adaptor
Replies: 11
Views: 292

Re: A/C-D/C adaptor

Depends on what the rated output volts are?

e.g. 12 volts at 12va is 1.0Amp
24 volts at 12va is 0.5Amp (500 milliamp)
by Brian
Thu Jun 11, 2020 11:29 am
Forum: Other Electrical/Electronics
Topic: Gaugemaster GM500 upgrade?
Replies: 10
Views: 318

Re: Gaugemaster GM500 upgrade?

Hi If the same GM500 is to work BOTH signal heads then this is done by just one set of change-over contacts on the GM500. Feed ideally 12volts DC positive from a Regulated power supply to the GM500 Pad 1. From Pads 2 & 3 connect two wires to each. From Pad 2 take one wire to the left hand signals Gr...
by Brian
Wed Jun 10, 2020 6:46 pm
Forum: The Mess Room
Topic: Do not touch the trains.
Replies: 23
Views: 585

Re: Do not touch the trains.

Yeap .. :D
Haven't seen my three year old GD face to face for some 90 days now! Just couldn't stop her rushing towards us.
by Brian
Wed Jun 10, 2020 6:09 pm
Forum: The Mess Room
Topic: Do not touch the trains.
Replies: 23
Views: 585

Re: Do not touch the trains.

I think this is another instance of pictures taken on an Ipad, or other apple device when the phone is the wrong way round when the picture is taken. The orientation is recorded in the Meta Data image tags of the picture and causes these problems on some devices. In this case the orientation is 3. ...