it looks like diagram No.3 could be a voltage amplifier,
no its pure to get more amps out of a regulated power suply as you can see the resistors in line of each regulator are there to balance the power evenly over the regulators
**broken link removed**
this is an amplifier schematic for a sensor signal not a power suply
it needs +9v/-9V power suply which you dont have at this moment and again you canot geting more out as that you put in
that works for an amplifier exacly the same the output signal will stop at the maximum voltage differends of the power suply of the opamp
i have a 12volt input, and want a 37volt output, so i need a 25volt gain. according to the website, G = 1 + (R2/R1) and values are in ohms
G = gain
i worked out i need R2 to be 48K and R1 to be 2k therefor:
G = 1 + (48,000/2,000) or
25 = 1 + (48,000/2,000)
i will link OUTPUT SIGNAL to Vin of lm317t+current amplifier.jpg and i should have the voltage and current output i require for my situation.