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The cheap ‘wallwarts’ that come with HO sets are okay, but have their limitations. Race two cars from one pack and you’ll get a power surge when one car comes off. And you won’t be able to run your WHO Mod cars without problems.
So what’s best to buy for an upgrade? Well, it depends how much you want to spend, what you're running and what else you might use a power supply for.
The basics you want is that it is 'DC output' and 'regulated' (ie it's always the
same voltage). You don't need one unit per lane -
HO cars run best at around 18 volts. Some old cars (T-
The current (amps) you need depends on the cars you're running. The motor draws the
current it needs (usually peaking at start up). Most stuff runs fine on 1 amp (so
you need 1 amp per lane). Our WHO Mod cars and the low to medium end Wizzards, BSRT
G3s and Slottechs might need 1.5 or even 2 amps (ie per lane). Unless you're going
to run highly hopped-
A budget option is a fixed-
At the top end is a variable bench top power supply like the one opposite from Maplins.
This gives you 0-