The LM317 can produce a Vout from 1.25V to 37V. I have a small piezo pickup I'd like to step down to as close to 1V as possible. The formula for the LM317 is roughly Vout = 1.25(1 + R2/R1). Can I just omit the resistor on the adjust pin so that R2=0, therefore getting me 1.25V? Do I still need to provide a resistor on Vout so that R1 is non-zero?
Am I going about this wrong?