modified 9 years ago

How to switch a transistor

00:57:51

The current hase to flow through the base so the transistor can be turned on.. Allowing the current to flow from the collector to the emitter 

published 11 years ago

rbrtkurtz

11 years ago

You have the basic concept. But without a resistor to limit the current, you're pushing 70mA through the base just to turn on a 12mA load.

Voltransistor

11 years ago

Your going to fry the transistor without a resistor between positive and base of the transistor.

faceblast

11 years ago

its more like a turbo boost controller. blow a small amount of air into the actuator and the turbo will spool up. or something.

faceblast

11 years ago

no wait its more like a fire hydrant but to open it you need to spray it with a garden hose

faceblast

11 years ago

actually i have no idea how to explain how transistors work. they have magic in them.

rbrtkurtz

11 years ago

No. Op amps have magic in them.

wyoelk

11 years ago

See the magic in VT's post Resistors ignor. That explains the "floating resistance" theory.

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