[linux-dvb] Re: J2 IR-Reciever - another question

[Peter Bieringer <pb@bieringer.de>]

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- --On Sunday, May 12, 2002 09:57:21 AM +0200 Dariush Forouher
<dariush@forouher.de> wrote:

> On Sun, 12 May 2002, Peter Bieringer wrote:
>> No, this symbol is a Field Effect Transistor (FET) (very different
>> kind to bipolar). It has Source, Drain and Gate (and sometimes an
>> extra connector for Substrat [or also called Base]).
>> 
>> Drain ----| |
>>           | | 
>>           | | 
>>      | --->| |
>>      | ----| |----- Gate
>>      | 
>>      | 
>>   Source
>> 
>> 
>> Drain ----| |
>>           | | 
>> Base ---->| |
>>           | | 
>> Source ---| |----- Gate
>> 
>> 
>> N-channel: tip of arrow points to Gate, P-channel vice versa.
>> 
>> FET mostly cannot be replaced by a bipolar one because of circuit
>> design.
>> 
> Thanks, I understand that now, but: How are these channels aranged
> on the transistor?
> 
> 
>          |   \
> Pin 1  --|--   \
> Pin 2  --|--    |
> Pin 3  --|--   /
>          |   /

All 6 variation are available "in the wild", depending on label.

Fastest way, if you have no data sheet is a search on Google

http://www.google.com/search?q=bc237+transistor

Replace bc237 (a common NPN transistor) with the label of your one.

        Peter
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