Selecting a Transistor

[Activ8]

On 2 Aug 2004 11:50:03 -0400, Byron A Jeff wrote:

<still snipping>

OK. That's a bit clearer. Kevin's page points out that small changes in the
base voltage results in huge changes in the current draw due to the diode
effect. That makes sense. So a 60mV change in the base voltage may change
the Ice by several hundred milliamps.

So then the base resistor facilitates using base input voltages well above
the required Vbe to get the transistor to turn on.

Got it.

Cool. Keep reading his analog papers and you should be squared away.

-
-It gets more interesting when the transistor is used as an
-amplifier, as opposed to a simple switch driven by a PIC (and BTW,
-I'll be ordering some more stuff from you in the future. I like your
-service.)

Service? I have a service?

Oh poop! I'm thinking of Randy Glitchbusters. Pass the compliment on
if you get a chance to say hi at PICList or wherever.

snip of a snip

--
Best Regards,
Mike