modified 3 years ago

Why is V at base 1.44 and not 1.713. Solved by giomix.

00:35:33

Why is voltage divider here 1.44 and not 1.713? At 9V the resistances 200kO and 47kO the calculated V as per equation gives 1.73. But the resistor at the emitter is in parallel to voltage divider causing the difference.

47 kO in parallel with 100kO are equivalent to 37 kO. Effect: the resistances in series are not 200kO and 47kO any longer.

published 3 years ago

giomix

3 years ago

Detach transistor base from the circuit if you want 1.71. Otherwise 47kO is in parallel to base-emitter junction and 1kO and drain 7uA , 30 flows through 47kO, 37 through 200kO

add comment in editor

EveryCircuit is an easy to use, highly interactive circuit simulator and schematic capture tool. Real-time circuit simulation, interactivity, and dynamic visualization make it a must have application for professionals and academia. EveryCircuit user community has collaboratively created the largest searchable library of circuit designs. EveryCircuit app runs online in popular browsers and on mobile phones and tablets, enabling you to capture design ideas and learn electronics on the go.