Trick Question

[Guy Macon]

Here are sone *EASY* questions:

HTTP://WWW.GUYMACON.COM/FUN/QUESTION/INDEX.HTM

Here are the answers:

HTTP://WWW.GUYMACON.COM/FUN/ANSWER/INDEX.HTM

 

[Frank Bemelman]

That doesn't seem to fit your problem as stated. A second
oscilloscope is still "an oscilloscope." You might even be
able to measure the vertical amplifier of one channel with
the other channel with a single dual channel scope.

Yes, Fred said something similar. I'm not very good in
setting up foolproof contests.

 

[Terry Pinnell]

What *real* circuit can't be measured with an oscilloscope ?

1st prize : a bag of 200 small pnp transistors.
2nd prize : a bag of 100 small pnp transistors.
3rd prize : a bag of 50 small pnp transistors.

It is a 'Trick Question', yes? OK, a short circuit?

 

[Wouter van Ooijen]

1st prize: Goran Larsson

2nd prize: Boris Mohar
3rd prize: Stefan Heinzmann

The poodle prize goes to Fred.

Just curious: which carrier do you use to send the poodle?


Wouter van Ooijen

-- ------------------------------------
http://www.voti.nl
PICmicro chips, programmers, consulting

 

[Frank Bemelman]

Just curious: which carrier do you use to send the poodle?

Oh, I let all the air escape, and then it goes in a flat
rate envelope

 

[John Woodgate]

I read in sci.electronics.design that Fred Bloggs <[email protected]>

a surreal circuit is one designed by an individual with
only an impression of electronics design.

That's called Burridgetronics, isn't it?

 

[John Woodgate]

I read in sci.electronics.design that Frank Bemelman

Yes, Fred said something similar. I'm not very good in setting up
foolproof contests.

Isn't it on this group that we see the .sig tag. 'For any foolproof
design, there is a fool greater than the proof.'?

 

[Ben Bradley]

In sci.electronics.design, "Frank Bemelman"

The winners are:

No fair! You posted this question today at 7:46AM and posted the
"winners" at 10:43AM, less than three hours later. Some of us have
lives and jobs to go to, and others of us sleep in late.

Not that these quantities of "small pnp transistors" are worth that
much - sending these internationally may cost as much as the
transistors themselves. Check digikey and see if it's cheaper to buy
from them and have them drop-ship to the winners.

1st prize: Goran Larsson
2nd prize: Boris Mohar
3rd prize: Stefan Heinzmann

And what is the "correct" answer(s)? I'm sure "The judge's decision
is final" and other mice-type applies.

The poodle prize goes to Fred.

All are congratulated and the unlucky contestants
are also thanked for their contribution.

What about the unlucky noncontestants?

 

[Ban]

What *real* circuit can't be measured with an oscilloscope ?

1st prize : a bag of 200 small pnp transistors.
2nd prize : a bag of 100 small pnp transistors.
3rd prize : a bag of 50 small pnp transistors.

I can understand, who wants these pnp, I really need only npn. I'll answer
only then.
ciao Ban

 

[Jim Thompson]

In sci.electronics.design, "Frank Bemelman"


No fair! You posted this question today at 7:46AM and posted the
"winners" at 10:43AM, less than three hours later. Some of us have
lives and jobs to go to, and others of us sleep in late.

Not that these quantities of "small pnp transistors" are worth that
much - sending these internationally may cost as much as the
transistors themselves. Check digikey and see if it's cheaper to buy
from them and have them drop-ship to the winners.


And what is the "correct" answer(s)? I'm sure "The judge's decision
is final" and other mice-type applies.


What about the unlucky noncontestants?

I missed seeing the answer posted. What was it? A circuit with no
source of power?

...Jim Thompson

 

[John Woodgate]

I can understand, who wants these pnp,

There are probably PNP because they are all germanium. (;-)

 

[Frank Bemelman]

I missed seeing the answer posted. What was it? A circuit with no
source of power?

It was the channel 'A' vertical amplifier of an oscilloscope
that can't be measured using the same oscilloscopes' channel 'A'.
Or B-B.

 

[Frank Bemelman]

What about the unlucky noncontestants?

Next time I'll post later in the day. I didn't think
the winning answer would be given so soon.

 

[Guy Macon]

Next time I'll post later in the day.

"later in the day" is a concept that doesn't apply well to a
newsgroup where users are in many different time zones...

 

[Frank Bemelman]

There are probably PNP because they are all germanium. (;-)

Last week on Ebay, Raytheon CK722 Vintage Transistor, item 2593073574
went for $46. But who knows what a bc556b is worth after 50 years.

 

[N. Thornton]

<[email protected]>) about 'Trick Question', on Tue,

There are probably PNP because they are all germanium. (;-)

lol, that was my first thought.

But no-one's given an electronic circuit that cant be measured by a
scope yet - AFAICS none of the answers yet qualify. A short circuit
can be measured without any difficulty.

I can only think of one offhand: those light antennas that convert
light into leccy using antenna technology. AFAIK no scope's got up
there yet! I claim those 200 thingies


Regards, NT

 

[Paul Burridge]

In sci.electronics.design, "Frank Bemelman"


No fair! You posted this question today at 7:46AM and posted the
"winners" at 10:43AM, less than three hours later. Some of us have
lives and jobs to go to, and others of us sleep in late.

Not that these quantities of "small pnp transistors" are worth that
much - sending these internationally may cost as much as the
transistors themselves. Check digikey and see if it's cheaper to buy
from them and have them drop-ship to the winners.

Even 50 small PNP trannies would be a lifetime supply for me. I get
through 50 NPNs per PNP, I reckon. I imagine Frank just can't wait to
get shot of 'em. ;-)

 

[N. Thornton]

I missed seeing the answer posted. What was it? A circuit with no
source of power?

Any scope can measure an unpowered circuit, and hopefully it will show
0v. I find this list of winners odd considering I have seen no correct
reply so far! (Apart from mine, which I'm fairly confident about.)

I guess it isnt just that life is unfair, but also that the worlds
decisions are obviously not properly considered at times. Those that
make the most decisions are the majority: and the majority are neither
the most intelligent nor especially well informed. Hence the world
turns the way it does.

I'm not too worried about the pnps as I dont expect life to be fair
any more And I cant think what one could do with them offhand,
except add them to the stock of, umm, a couple hundred pnps already


Regards, NT

 

[Guy Macon]

But no-one's given an electronic circuit that cant be measured by a
scope yet - AFAICS none of the answers yet qualify. A short circuit
can be measured without any difficulty.

I can only think of one offhand: those light antennas that convert
light into leccy using antenna technology. AFAIK no scope's got up
there yet! I claim those 200 thingies

I can measure those with an oscillosope. Just run a couple of
30AWG wire wrap wires from the light outside of the case, and
hook the scope probe up.

Here is a computer that does useful work and which you can't
measure with an oscilloscope:
http://www.research.ibm.com/resources/news/20011219_quantum.shtml

 

[Boris Mohar]

The winners are:

1st prize: Goran Larsson
2nd prize: Boris Mohar
3rd prize: Stefan Heinzmann

The poodle prize goes to Fred.

All are congratulated and the unlucky contestants
are also thanked for their contribution.

Winners can collect their prizes by emailing their
address, watch the 'x' and 'invalid' in the reply address,
these have to be removed. Prizes will be shipped ASAP,
priority airmail and can be expected within 5-6 days.
All information is kept highly confidential.

Can I pass on my prize to the first person who can explain this scope
trace?

http://www3.sympatico.ca/borism/Misc/PDTRACE.jpg

Setup - 10mm unbiased silicon photo diode connected to the vertical input
(1M) through 3' of coax and facing the CRT thus looking at its own output.
All the lights in the room were out

Scope Tek 465 at 5mV/div vert 5ms / div hor.

Explain big and small wiggles in the trace.




Regards,

Boris Mohar

Got Knock? - see:
Viatrack Printed Circuit Designs http://www3.sympatico.ca/borism/

void _-void-_ in the obvious place