My power setup: a lab quality DC switching mode power supply rated at 0-30 volts and 0-3 amps. This powers a PIKO 5 amp analog throttle, which in turn is securely connected via a 14 gauge power cable to a small oval of LGB R2 radius track. The DC supply has an LCD screen which reads out volts and amps. The voltage output is finely set at a constant 22 volts feeding into the analog throttle. With the PIKO analog throttle at zero, the amp display on the power supply reads 0.13 amps. When my train headed by a new BR 24 analog loco pulling three PIKO two-axle beer reefers plus an LGB 3019 postal/baggage van is energized, the train accelerates smoothly to running speed. The DC amperage display then fluctuates between 0.71 and 0.85 amps as the train negotiates the oval, the difference being as much as 0.14 amps, yet the train runs smoothly. The brass LGB track is clean and this is an indoor layout. My question is why the fluctuation in amperage of 0.14 amps? What am I missing here? Explanations welcome!
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