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Circuit schematic templates

Circuit — NPN switch with base resistor

Classic NPN transistor as a low-side switch.

Template previewCircuit schematic
NPN switch+−V15VR11kQ1R2100RG1

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title "NPN switch"
component V V1 5V at (0,1) orient h
component R R1 1k at (2,1) orient h
component Q Q1 at (4,2)
component R R2 100R at (4,0) orient v
component GND G1 at (4,5)
wire (0,1) (2,1)
wire (2,1) (4,1)
wire (4,0) (4,1)
wire (4,3) (4,5)