Suggested power for TU-56...

Eric> David Corbin wrote: Eric> You need +5V at 0.8A and -15V at 0.8A, both regulated to +/- Eric> 10%. (You can optionally use +10V at 0.8A instead of +5V, with Eric> suitable wiring.) Eric> It should be easy to find a surplus triple-output power supply Eric> with +5 and +/-15V, and simply not use the -15V output. New, Eric> these cost around $70-80. Eric> It may be easier and/or less expensive to use separate 5V and Eric> 10V power supplies. For instance, Digikey has wall-wart style Eric> switchers that are suitable: Eric> T920-P5P 5.0V 2.4A $14.03 each T924-P5P 15.0V 1.0A $14.03 each Eric> Since they are isolated (as all common AC-to-DC power supplies Eric> are), you can use them as positive or negative supplies. If you use a switcher, make sure the minimum load current is suitable. Linear supplies work with no load, but switchers often do not. In that case, a load resistor can help. Also: DEC usually quoted +/- 10% on power supplies, but in reality that wasn't necessarily true. It's good to assume +10, -0% tolerance. I know for a fact that DMC11s require that for reliable operation. paul