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File:Transistor-diode-npn-pnp.svg - Wikimedia Commons
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Simple LED Flasher Circuits Using 2N3904 NPN Transistor
From the Q and A | Nuts & Volts Magazine
Diode-connected transistor - Wikipedia
![Activity: The BJT connected as a diode [Analog Devices Wiki]](https://wiki.analog.com/_media/university/courses/electronics/npn_diode-bb.png "Activity: The BJT connected as a diode [Analog Devices Wiki]")
Activity: The BJT connected as a diode [Analog Devices Wiki]
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switch mode power supply - What does reverse diode on NPN symbol indicate? - Electrical Engineering Stack Exchange
File:Npn diode circuit diagram.gif - Wikimedia Commons
File:Transistor-diode-npn-pnp.svg - Wikimedia Commons
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