Electronics Forum / Electronics / September 2005

Subject says it all really - all I can find are IR photodiodes.
Thanks,
Steve

Yes I know what it sounds like, but can someone give me a freq domain
analysis (i.e. how to get rid of it by filtering) and a time domain
analysis (i.e. what it looks like on the waveform?)  I'm guessing it's
clipping on only the higher frequency components of the signal and the

The Pentagon and the U.S. intelligence agencies called the N.S.A. [ National
Security Agency ], C.S.S. [ Central Security Service ], D.I.A. [ Defence
Intelligence Agency ], D.A.R.P.A. [ Defense Advanced Research Projects
Agency ], C.I.A. [ Central Intelligence Agency ], the D.H.S. [ ...

hi to all!... i hope all of u guys were all doin fine, including the
group itself!.. anyways, im RYAn!.. a college student taking
engineering!..and fortunately on 3rd year now!.... well,  i hope i can
chat with members sometime and share knowledge, ideas, experiences,

My NiCad batteries were pretty much dead, so I decided I would get modern
and buy Nimh batteries. For anybody knowing nothing about batteries, or
even electricity, shopping for a charger is really brain numbing. Some
chargers come with 2500 mah batteries, some other don't utter ...

        i am wondering if anyone can tell me where i can find a schmatic
for a PYROD DVD 750 as there is no power and it looks like something to do
with the power supply is gone but need further assistants any help would be
appreciated i relise i can buy a another one but ...

my son has taken apart an old smoke alarm cos he wants the sounder out of it
for a project. I notice the detector element has "radioactive" engraved on
its cover. He's taken the element apsrt and I'm wondering is this dangerous
to handle, or even be near?

I recently purchased a job lot of electronic components and found one that
I'm not sure about.
It is about 1cm by 6cm in size, has two wires coming from it and has a brown
housing over it. Underneath, it has to strips of metal and in between a

I heard that Ceramic Capacitors rarely fail nevertheless how can one be
sure? Is there a way to test them to know if they are good? Is it
important to test these or not? Any help would be appreciated!

I need help finding or building a simple am linear amp. I would like from .5
to 1 amp from the Broadcast band to 30 mc. I have a signal generator and
would like to up the output a little bit. Any kit or link to a homebrew site
would be great.

Has anyone actually produced a successful TRON box?
I copied the schematic posted on the internet and attempted to assemble one
however, I must have not paralleled the proper size capacitors because it
simply had no effect on the meter. Of course, I increased the uf range but,

What is the Wiegand Format ?
Is there a specification of it somewhere ? I had no luck doing an
online search...

Looks like the designers of the "new improved" Nylex sign should have
consulted this forum as to how to wire a few LED's together.
After a clunky start, (and dubiously blaming sattelite allignment for
incorrect time) and only after a few months in operation, I noticed the

I have two players with a rear s-vhs connection but only one s-vhs
connection on the TV.  Is there a s-vhs double adapter available?
I've searched and havent found one yet.
Thanks.

Anyone knows what I can replace IRF510 with? I can source IRF520,530 and
540, but just can't source IRF510!