TL431 Calculator

Free online TL431 voltage calculator. Input R1, R2, and Vref to instantly determine Vout and shunt current with our responsive interactive schematic.

V_IN R_sup V_OUT R1 R2 TL431
V
kΩ
kΩ
V
Ω
Output Voltage (VOUT): 4.99 V
Formula: VOUT = Vref × (1 + R1 / R2)

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Akhil Satheesh

Akhil Satheesh

Akhil Satheesh is an electronics expert and the Founder and CEO of Soldering Mind. He specializes in designing innovative electronic circuits and custom, high-performance PCB layouts. Every project he shares on solderingmind.com is rigorously bench-tested to ensure accuracy for makers and hobbyists alike.

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