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

[Dariush Forouher <dariush@forouher.de>]

It works! The problem was that I understood your draw wrong. The TSOP
has a space between pin 2 and 3 and I thought that the space in your
draw would mean that.

thanks very much!

Dariush

Am Mon, 2002-05-13 um 22.30 schrieb Joerg Riechardt:
> Dariush Forouher wrote:
> 
> > Am Mon, 2002-05-13 um 19.17 schrieb Joerg Riechardt:
> > > Dariush Forouher wrote:
> > >
> > > > > How many volt do you have at drain with/without remote signal?
> > > >
> > > > Without signal: 2.10 V
> > > > With signal   :~2,25 V
> > > > (after the 220 Ohm resistor)
> > >
> > > that means, there is something wrong with your circuit
> > > do you have same values without the additional LED?
> > >
> > > > (I've no oszilloscope to messure, only a voltmetre)
> > >
> > > that's enough
> >
> > I've just read that the transistor I used (BSS38) isn't compatible with
> > the BSS98. (I bought different types because I wasn't sure about
> > anything). I replaced it with the BS170 that should work, I was told.
> > But no voltage changes can be messured/seen with a LED with that
> > transistor.
> 
> use volt metre instead of LED!
> 
> > I've already tried different TSOP1738 and Condensators. Can
> > you please draw a simple circuit with that I can test the transistor?
> 
> Sorry, can't help you with that.
> 
> >
> > (I've looked at the one from
> > http://www.fairchildsemi.com/ds/BS/BS170.pdf, but I'm too stupid to see
> > what resistors I have to put before drain, gate and/or source).
> >
> > I've also tried to cut down the cable (it's now about 20cm long).
> 
> I have ~ 2m, length shouldn't be a problem.
> 
> >
> >
> > ciao
> > Dariush
> 
> 
> 
> 
> 
> 
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