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61459Re: Amperage Draw

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  • Don A
    May 1, 2009
    • 0 Attachment
      Many thanks. I appreciate it.

      ...don


      --- In z_scale@yahoogroups.com, "Jeff BAZ-man" <sjbazman49@...> wrote:
      >
      > Correct. You read the Voltage <across> the rails and the Current <through> the RRampMeter. So, the DCC power applied to the rails must pass entirely thru the meter. If you hold an un-wired RRampMeter to the rails, it will only show Voltage. See the following page from Tony's Train Exchange for connection examples: http://www.tonystrains.com/technews/rrampmeter.htm
      >
      > You can simulate a load by connecting any 12v light bulb or a spare M�rklin motor to one end while you connect the end to the rails.
      >
      > Jeff
      > SF Bay Area Z
      >
      >
      > --- In z_scale@yahoogroups.com, "Don A" <zbarr474@> wrote:
      > >
      > > Jeff:
      > >
      > > I was in a "new" [actually older than dirt] hobby shop today with my N Scale buddy. Neither of us had been there before. The LHS Owner seemed to know the meter pretty well and he also does a lot of DCC installations. He didn't have a meter there, but drew a diagram.
      > >
      > > He said one end should be connected to the two wires coming from the output power from the controller, and the other end two wires be connected to the track. This would mean to me that 100% of the power is going through the meter. I have never found a decent wiring diagram on the use of the meter, but reading some info, the printed docs seem to say the same.
      > >
      > > Does this seem correct??
      > >
      > > ...don
      > >
      > > --- In z_scale@yahoogroups.com, "Jeff BAZ-man" <sjbazman49@> wrote:
      > > >
      > > > Don,
      > > >
      > > > You should see ~0.05A+/- 0.02 for MTL GP's and AZL locos. For MTL F7's, you should see >>0.1A. M�rklin locos, similar >0.1A. Are you sure you have it configured / wired correctly ? DCC power on one end, track power on the other? I don't have the manual here at work but make sure that the DCC power only connects to one end and no where else (no bypassing the RR Amp meter). Also, make sure you have the ability to measure Amps (setting, jumper, current range, etc.).
      > > >
      > > > Jeff
      > > > SF Bay Area Z
      > > >
      > > > --- In z_scale@yahoogroups.com, "John Mui" <jmui@> wrote:
      > > > >
      > > > > No Don. I get a higher reading then that with my powercab. Most z scale
      > > > > engines draw very little current, but its going to draw more then .01 amp.
      > > > >
      > > > > John
      > > > > ----- Original Message -----
      > > > > From: "Don A" <zbarr474@>
      > > > > To: <z_scale@yahoogroups.com>
      > > > > Sent: Wednesday, April 29, 2009 1:31 PM
      > > > > Subject: [Z_Scale] Amperage Draw
      > > > >
      > > > >
      > > > > >I have a Tony's Ramp meter for checking DCC voltage & amperage. I checked
      > > > > >the meter on a HO systems and the voltage and amperage were the same as
      > > > > >tthe HO meter. It seems no mater how many DCC engines I put on the track,
      > > > > >it never reads over 0.01 amps. Is a reading of always 0.01 normal? Does
      > > > > >anyone have a table of expected amperages readings as you add more and more
      > > > > >engines?
      > > > > >
      > > > > > Thanks.
      > > > > >
      > > > > > ...don a
      > > > > >
      > > > > >
      > > > > >
      > > > > > ------------------------------------
      > > > > >
      > > > > > Z-scale: minimum siZe, MAXIMUM enjoyment!
      > > > > > Yahoo! Groups Links
      > > > > >
      > > > > >
      > > > > >
      > > > >
      > > >
      > >
      >
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