BETAIdentify the input
The middle lead and metal tab are negative IN; the right lead is OUT.
Adjustable negative regulator
LM337 Basic Circuit
Build a basic LM337 circuit with labeled pins, component values and connection guidance.
Package view
LM337 in a circuit
A physical TO-220 package with the correct input tab and capacitor polarity.
Connect it, step by step
Follow the component values and pin connections
Set output magnitude
Use 110 Ω OUT-to-ADJ and 330 Ω ADJ-to-ground.
Check capacitor orientation
Connect the positive ends of the input and output tantalum capacitors to the common return.