Re: WANTED: Good Source of Electronics Theory

EADGBE wrote:
> On Apr 21, 6:41 pm, Eeyore <rabbitsfriendsandrelati...@[EMAIL PROTECTED]
>
> wrote:
>>
>> And yet you continue to refuse to *directly* measure it's Vbe which
>> is what's im****tant.
>
> According to the datasheet for Q205, the Vbe is:
>
> MINIMUM: -0.58
> TYPICAL: -0.62
> MAXIMUM: -0.68
>
> These figures were arrived at using the following test conditions:
>
> Vce = -6.0V
> Ic = -1.0mA
>
> As I have said, I am a hobbyist.  Not sure how to do "real world"
> testing for Vbe or why it's im****tant.  I do know how to test NPN and
> PNP transistors using the diode function of a multimeter, that's it.

That's a good starting point, and will likely identify 95% of any problems

in an amp. Transistors and diodes, that is.

Other things to look for are blown emitter resistors, other burned 
resistors, and bulging capacitors. Problms relalting to drifting component

values are pretty rare.

geoff