Q:

Need help with a power supply outputs

Following is a power supply with dual +-15V output:
http://docs-europe.electrocomponents.com/webdocs/13f8/0900766b813f8a87.pdf
I'm confused to understand two points:
1-) What is the difference between Output A and Output C ? Both looks variable. One is 1A the other is 0.2 A. I cannot figure out what is the difference. For dual op-Amps which one should be used? 
2-) It also says 0 to 30V. How can it be configured for that? Output A with +15 plus and -15 GND?

A:

1-) What is the difference between Output A and Output C ? Both looks variable. One is 1A the other is 0.2 A. I cannot figure out what is the difference. For dual op-Amps which one should be used?

OUTPUT A is a pair of tracking outputs. Press the OUTPUT SELECTION button and the OUTPUT A LED will probably blink (I didn't check). Pressing the up/down keys will cause both to be adjusted. e.g., ±15, ±14, ±13, etc., or in 0.1 V steps. Use these for dual rail opamps.
OUTPUT C is a second single supply adjustable independently between -15 and +15 V. This could be useful, for example, to apply a DC voltage into your opamp circuit.

2-) It also says 0 to 30V. How can it be configured for that? Output A with +15 plus and -15 GND?

You're right - it can't. It's 30 V between the blue and the red socket but that will only be useful if you don't need the COM reference. It will be symmetrical around the COM terminal.

Wow!

