Can anyone point me in the direction of a simple but reliable electronic load that can sink 0~20A on up to +12VDC. I have a design from Elecktor that looks promising if overly complicated. (I won't post it because it cost me money to obtain and it seems wrong to make it publicly available).

Thanks in advance.

Paul

 

How about something like this - http://www.google.com/products/cata...a=X&ei=4VNqT9DzD43pgAfvn4nyCg&ved=0CHwQ8wIwAA#

One similar should be available in the UK. Does the UK have stores like "Harbor Freight" ? http://www.harborfreight.com/ If so thats where I'd look first.

 

Sorry I should have said it's something I want to build myself but thanks for the reply.

 

I would recommend five or six twelve volt 50 watt incandescent lamps, in parallel. They would be moderately expensive but are readily available in the camping supply section of many retailers.

 

Here is a schematic of one I use, the transistor is mounted on a large heatsink. The transistor Q1 can use a 2n6284, or on occasions I have used n-channel mosfets. The size of the heat sink is important. The collector of the transistor is also connected to the+ of the DC source to be tested. I use this for testing current limit of power supplys discharging batteries. It is a constant current load.