LM723 vs LM317 regulator choice?


Joined Apr 27, 2007
I've used several regulators, including the LM317 and the LM7805. For high precision, I would go for a discrete design with a pass transistor (NPN) and an op-amp. It depends on what you want.

Kind regards, Samuel Lourenço

panic mode

Joined Oct 10, 2011
agreed with prev posts. 723 is fine but required more external components, adjustable range was not continuous, it was split into two (below and above some 7V if i recall) - unless one adds some mods like adds neg rail.


Joined Mar 14, 2008
Depends upon your bench supply requirements.

The LM317 is very simple to use, and is nearly bullet-proof as it has both short-circuit and over-temperature protection.
But it's limited to about 1.5A and has a minimum output voltage of 1.2V.

Thread Starter


Joined Jun 11, 2015
I only need an Amp at about 3 - 30v since my interest is in small signal amps and pre amps

thanks guys, i'm going to use the LM723.