On Sun, 24 Jul 2005 12:58:54 +0100 Palindr?me wrote: | Palindr?me wrote: | |> Phil wrote: |> |>> thanks both. will haveto try the "try and fry" i guess. cheers |> |> |> You may want to consider using a power supply intended for a PC. They |> are very cheap (I pay about 1GBP each for them) and have a stabilised 5 |> volts output (amongst others). |> |> There are some potential snags - some supplies need a minimum load* and |> ATX supplies are more complicated to switch on and off. So maybe an AT |> supply would be a better choice. |> |> * Your load is /probably/ going to be enough - but it depends on the |> /minimum/ load that your device applies, not the maximum. If it doesn't |> work, you may need to stick an extra load on - say a one ohm five watt |> resistor. Without this minimum load, the power supply won't run properly |> - a feature of many switch-mode power supplies. | | Oops! Sorry - should have been a five ohm, five watt | resistor. Which you can make using five one ohm one watt | resistors.
Or with five 25 ohm 1 watt resistors.