The TL431 is a three-terminal programmable shunt regulator that implements Zener-like references ... nor from a third pole introduced from an external capacitor in series with the load resistance. A ...

The TL431 has been around for nearly 50 years. During those decades, while primarily marketed as a precision adjustable shunt regulator, this legacy device ... It gets grounded. Series connection adds ...

(Although we think he really made it for the fun of making it.) The circuit is centered around a TL431 programmable shunt regulator, which is an awesome and underrated chip in its own right.

[Ken] may well be right about the TL431. Even Texas Instruments can’t nail down a single name for it. Their page for the part calls it a “Adjustable Precision Shunt Regulator”, yet the ...

LM4041c12); reference shunt regulators (TL431, LM431); Zener diodes (1.3 W series); LEDs (all colors or combinations, as their voltage drop and current ratings differ); and even transistors used ...