I would not use the 2.5 Amp unit or plug it up with the C7004. it's never a good idea to mix PSU's.

I would say the 10 Amp unit is the best bet. I would be happier if I could find a full spec, but as it's switched mode I assume it's regulated? If you have a multimeter put it across the terminals and check that the off load voltage is 12 to 13 Volts.

You will need to make up a cable so that the single supply is plugged into both P1 & P2. The Powerbase detects this and increases the current that can be drawn.

However remember the 1.2 has a relatively frail output stage, which is easily damaged. Having a greater current available does not necessarily make things worse, as a hard short without a volt drop on the PSU will cause the Powerbase to overload quickly. However a partial short with more amps available can cause the mosfets to cook. That said you are probably in no more danger than with 2 x C7004.

Remember if the worst does happen, or even if not, you can always upgrade a 1.2 Powerbase to PB-Pro + S-H Power, which replaces the output stage with one that is virtually indestructable.

Rich

 

If you were to update your profile, I'd know whether or not to offer you a C7004 power supply so you could have two. But from the looks of the links you provided, I'm guessing you are not in the U.S. and it would not work.

 

Sorry, I am new this week, havent had a chance. Sadly not in the US rather rainy UK. Check out my new circuit uploads in the track section today as a powerpoint file. Appreciate the kind offer....seems I am set to blow something up instead

 

Stressor, IMHO, you're best off budgeting for the PB-Pro and Simple-H (S-H) mods and never having to worry about it again. Well, that and a good regulated Power supply. I've done my research, and put in my down payment for the upgrades just yesterday. I can't wait to run 6 cars (with friends, or with pacers

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PS. YAY! I'm not a tea boy any more. I've got my learner's permit.