npn related issues & queries in ElectronicsXchanger


Understanding a PNP/NPN LED schematic

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Updated May 19, 2019 10:25 AM





Selectable sink or source Input

npn pnp
Updated April 29, 2019 02:25 AM



555 timer square wave LED flasher

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Updated April 24, 2019 14:25 PM










Constant Current LED Circuit

led npn
Updated March 17, 2019 14:25 PM

MCP73831 stat pin current

charger battery-operated npn
Updated March 16, 2019 19:25 PM





kirchhoff voltage law violation

npn pcb-antenna biasing bipolar
Updated February 28, 2019 09:25 AM


Distributing power evenly to multiple pins

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Updated February 23, 2019 17:25 PM



NPN vs PNP Transistor Wiring

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Updated February 12, 2019 12:25 PM








Confusion with 555 transistor relay driver

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Updated January 18, 2019 11:25 AM



How can I create an SCR using a PNP and NPN?

basic npn pnp scr
Updated January 08, 2019 19:25 PM

Find voltage across load resistor

resistors npn zener
Updated January 06, 2019 17:25 PM

Voltage Circuit Switch with BJT

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Updated January 05, 2019 08:25 AM

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