I'm a linear circuits novice attempting to build an amplifier.
I am generating an analog output via a digital to analog card in my pc. The output of this card is limited to 10V. I require 20V from my amplifier (less than 50mA). All of the cheap op amps i've looked at have supply voltages of no more than +/-18V which limits my output to ~16V.
I will be creating some complicated wave forms from my D/A card and simply need that wave amplified.
1. Am I approaching this correctly, or should I be looking to just buy a prefab adjustable gain amp?
2. Where can I purchase an op amp that can supply 25-30V?
3. If I construct a simple linear amp, what do I need to consider in order to maintain my original signal characteristics.
I appreciate any and all responses/advice.