RE: Infrared Transmitter

[rj@xxxxxxx]

I would recommend building this or a similar project to anybody with even
the slightest interest in this field.  I have learnt so much in the last
weeks its amazing from reading circuit diagrams to how the 555 timer works,
to how not to solder a breadboard. now all I need to do is figure out how
to
add a serial port to this thing so winamp can interface as well.

regards.



-----Original Message-----
From: nigel@xxxxxxx
[mailto:nigel@xxxxxxx]
Sent: Thursday, 7 December 2000 8:17
To: ukha_d@xxxxxxx
Subject: RE: [ukha_d] Infrared Transmitter



On 05-Dec-2000 rj@xxxxxxx wrote:
> this info is perfect. thanks!!!!! will go over a few more things
> this week
> when I get a chance, I have got the zener diode the wrong way for a
> start.

That should be a good thing- it will have clamped the power supply
to the TSOP to 0.6V or so, so as long as the zener or resistor haven't
burnt out, you should be fine!

As a side note for the electronically curious, zener diodes
work as normal diodes if you connect them normally, but they 'break
down' in a nice way when the reverse voltage gets higher than it's
'zener voltage'.  The result is a fairly well regulated supply, but it
is noisy (they're actually used as noise sources for some test
equipment!) compared to a 7805 or the like.  Should be fine for the
TSOP though...

Nigel




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