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#1279 Three Transistor Voltage Regulator

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Este Integrado Lo Hace TODO - TL431

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#2065 Guess the Capacitor

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#374: Back to Basics: JFET Current Source / Limiter circuits

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#1115 TL431 Voltage Regulator IC

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#411 Build an opamp (part 1 of 7) current source

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#1885 MAX2870 6GHz Signal Generator

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#380: Circuit Fun: Twin-Tee Oscillator - low distortion op amp sine waves