Chip with simple program for Toy

[Peter Bennett]

On 4 Jan 2007 11:50:25 -0800, "panfilero" <panfilero@gmail.com> wrote:

Whoa! I appreciate all the responses, I didn't think it was gonna be
this complicated to get my schematic over to PCB format (I'm new to all
this). This is something that I would like to get into, so I am
willing to invest some time and energy to learning some of the better
software than taking an easy way out of this. I have access to a copy
of OrCad 10.5, if I learn how to use this and draw my schematic on it,
would this give me a file that I could send somewhere to have it made?
I mean if I'm willing to invest some time and energy into learning
software for circuit designing, what is a good, generally universely
accepted type of program to go with?

With any electronic CAD program, you have to both draw your schematic,
and lay out the PC board based on that schematic. The PC layout
program will normally produce "Gerber" files that can be sent off to
almost any board shop to get the boards made.

There may be some contract board layout shops who will produce a board
layout from your schematic and specs, but I expect that they will be
much too expensive for hobby use.

 

[Tom Biasi]

"Robert Wilson" <rob.wilson@remove.brushhead.plus.com> wrote in message
news:45a0eaf7$0$8721$ed2619ec@ptn-nntp-reader02.plus.net...

Hello,
I would like to find a circuit diagram of an AM Modulator scheme based on
a Triode Thermionic valve/tube. I have a SPICE package that has a Triode
valve as a component. The package i'm using is
Simetrix, from Cadence.

Can anyone help please?

Regards,

Robert.

Hi Robert,
Your request is very broad. What frequencies are involved?
Are you talking about modulating an RF signal with audio?
What type of tube do you have in your simulator?

Tom

 

[Robert Wilson]

Hi Tom,
This is just for a piece of college work, but tha tube I have is an
ECC36 (I guess from Mullard). I am only looking at a modulation
frequency of around 1Khz, the standard audio test tone, on a 200kHz carrier.

Regards,

Robert.

Tom Biasi wrote:

"Robert Wilson" <rob.wilson@remove.brushhead.plus.com> wrote in message
news:45a0eaf7$0$8721$ed2619ec@ptn-nntp-reader02.plus.net...
Hello,
I would like to find a circuit diagram of an AM Modulator scheme based
on a Triode Thermionic valve/tube. I have a SPICE package that has a
Triode valve as a component. The package i'm using is
Simetrix, from Cadence.

Can anyone help please?

Regards,

Robert.

Hi Robert,
Your request is very broad. What frequencies are involved?
Are you talking about modulating an RF signal with audio?
What type of tube do you have in your simulator?

Tom

 

[Tom Biasi]

Tom Biasi wrote:

"Robert Wilson" <rob.wilson@remove.brushhead.plus.com> wrote in message
news:45a0eaf7$0$8721$ed2619ec@ptn-nntp-reader02.plus.net...
Hello,
I would like to find a circuit diagram of an AM Modulator scheme based
on a Triode Thermionic valve/tube. I have a SPICE package that has a
Triode valve as a component. The package i'm using is
Simetrix, from Cadence.

Can anyone help please?

Regards,

Robert.

Hi Robert,
Your request is very broad. What frequencies are involved?
Are you talking about modulating an RF signal with audio?
What type of tube do you have in your simulator?

Tom

"Robert Wilson" <rob.wilson@remove.brushhead.plus.com> wrote in message
news:45a1027c$0$8748$ed2619ec@ptn-nntp-reader02.plus.net...

Hi Tom,
This is just for a piece of college work, but tha tube I have is an ECC36
(I guess from Mullard). I am only looking at a modulation frequency of
around 1Khz, the standard audio test tone, on a 200kHz carrier.

Regards,

Robert.

I don't have anything with that tube but basic triode modulator circuits are
all over the net.

Try here: http://www.vias.org/basicradio/basic_radio_29_02.html

Tom

 

[Roger Dewhurst]

"Ed Zagmoon" <spartan_isle@yahoo.com> wrote in message
news:1167730475.865527.112570@48g2000cwx.googlegroups.com...

I want to electrocute criminals and sinners myself, because
the justice system is corrupt as hell.

So, HOW can I build my own electric chair to kill those who
are harmful to society???

Just use the largest high voltage capacitor you can find. As someone else
has suggested a little personal experimation might be in order.

R
>

 

On 11 Jan 2007 01:35:09 -0800, "Davy" <zhushenli@gmail.com> wrote:

Hi all,

I am new to CPU design and confused with two CPU term. That is
interlock and stall. What's their difference? Does interlock and stall
all do insert NOP and remove the data dependency?

I have copied a sentence from a CPU document "The interlock is
responsible for detecting read-after-write hazards and stalling the
pipeline until the hazard has been resolved. This avoids the need to
insert nop directives between dependent instructions, thus keeping code
size to a minimum, as well as simplifying assembler-level programming."

Best regards,
Davy

In any system where you have co-processes/ors you never really know at
a given time, if what you asked to be done has been so.

I write a lot of database code and you ask for something to be done
and get on with the rest of your app while the DB engine actually does
the grunt work. Now suppose I try to retrieve a piece of that info I
just "wrote" and it hasn't actually been written by the engine yet, my
app will fail to find it. In DBs, you can issue a command to ensure
that you don't proceed until all pending operations have completed.

Evidently (from your copied sentance) this is a potential for
pipelined processors also. So the interlock and stall makes sure that
if you try to access something that hasn't actually arrived at it's
destination, this is detected and the action is delayed until it is
valid - thus removing the need for you to detect this in your own
code.

 

[Dr. Anton T. Squeegee]

In article <1169326967.460164.14370@q2g2000cwa.googlegroups.com>,
electronics_student_2007@yahoo.com (known to some as Alex) scribed...

Hello people,

Is the following true in practise ? If someone has to test that a
certain object is bugged then simply scan the object for RF / UHF
waves. What is the easiest way of scanning ? a TV ?

There are many ways to bug a communications device, and not all of
them are radio-based. However, in the sense of transmitters, you are
correct.

The best way to scan for such a device would be with a handheld
spectrum analyzer. Be prepared to spend at least a few thousand for a
good one.

Happy hunting.


--
Dr. Anton T. Squeegee, Director, Dutch Surrealist Plumbing Institute
(Known to some as Bruce Lane, KC7GR)
http://www.bluefeathertech.com -- kyrrin a/t bluefeathertech d-o=t calm
"Salvadore Dali's computer has surreal ports..."

 

[Michael A. Terrell]

lori wrote:

I cant turn my tv on....there is only a touch tab for the on/off and it
isnt working...is there another way to turn it on?

Wrong newsgroup. Try news:sci.electronics.repair . Give them the
Brand and Model numbers, as well as the symptoms and they may be able to
help you.

http://groups.google.com/group/sci.electronics.repair?hl=en


--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

 

[Phil Allison]

"Dr. Anton T. Squeegee"

There are many ways to bug a communications device, and not all of
them are radio-based. However, in the sense of transmitters, you are
correct.

The best way to scan for such a device would be with a handheld
spectrum analyzer. Be prepared to spend at least a few thousand for a
good one.

** How does a " bug " signal stand out from all the regular transmissions
seen on the spectrum ??

Mobile phones generate powerful signals over ranges of 30 metres or more,
one of them can be the "bug".

Reality is, bug detection is a job for a *well equipped expert * armed
with a clear idea of what sort of bug he is looking for and some knowledge
of where it might be located.





........ Phil

 

[me]

"Phil Allison" <philallison@tpg.com.au> wrote in
news:51giagF1kiam7U1@mid.individual.net:

"Dr. Anton T. Squeegee"


There are many ways to bug a communications device, and not all of
them are radio-based. However, in the sense of transmitters, you are
correct.

The best way to scan for such a device would be with a handheld
spectrum analyzer. Be prepared to spend at least a few thousand for a
good one.


** How does a " bug " signal stand out from all the regular
transmissions seen on the spectrum ??

Mobile phones generate powerful signals over ranges of 30 metres or
more, one of them can be the "bug".

Reality is, bug detection is a job for a *well equipped expert *
armed with a clear idea of what sort of bug he is looking for and some
knowledge of where it might be located.



well, if a signal is comming from a lamp there might be a bug...

----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----

 

[Don Bowey]

On 1/21/07 9:18 AM, in article
1169399904.256223.269340@51g2000cwl.googlegroups.com, "okuul@yahoo.com"
<okuul@yahoo.com> wrote:

how to transform a vidoe deck into a decoder

Are askiing how to turn it into a Premium channel decoder?

Do you know the channel number or frequency of the channel you want to
decode?

Is is within the tuning range of the deck?

Are you aware it's illegal theft of service to do this?

Don

 

[David L. Jones]

Phil Allison wrote:

"Dr. Anton T. Squeegee"


There are many ways to bug a communications device, and not all of
them are radio-based. However, in the sense of transmitters, you are
correct.

The best way to scan for such a device would be with a handheld
spectrum analyzer. Be prepared to spend at least a few thousand for a
good one.


** How does a " bug " signal stand out from all the regular transmissions
seen on the spectrum ??

Mobile phones generate powerful signals over ranges of 30 metres or more,
one of them can be the "bug".

Mobile phones can be used AS the bug too. These modified Nokias sell
like hot cakes:
http://cgi.ebay.com.au/Nokia-3310-Spy-Phone-GSM-Dual-Band-Surveillance_W0QQitemZ260075752586QQihZ016QQcategoryZ31223QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

It's much easier to be bugged by an innocuous device such as this that
people can come and go with. PDA's, phones or MP3 players put in record
mode and left in a room for example are popular with sales people and
the like.

Be afraid, very afraid. Use a cone of silence wherever possible.

Dave

 

[Michael Black]

"Phil Allison" (philallison@tpg.com.au) writes:

"Dr. Anton T. Squeegee"


There are many ways to bug a communications device, and not all of
them are radio-based. However, in the sense of transmitters, you are
correct.

The best way to scan for such a device would be with a handheld
spectrum analyzer. Be prepared to spend at least a few thousand for a
good one.


** How does a " bug " signal stand out from all the regular transmissions
seen on the spectrum ??

That's why the old books would suggest something with a speaker, so you'd

get audio feedback when you were tuned to the bug.

Michael

Mobile phones generate powerful signals over ranges of 30 metres or more,
one of them can be the "bug".

Reality is, bug detection is a job for a *well equipped expert * armed
with a clear idea of what sort of bug he is looking for and some knowledge
of where it might be located.





....... Phil

 

[Michael Black]

me (me@here.net) writes:

"Phil Allison" <philallison@tpg.com.au> wrote in
news:51giagF1kiam7U1@mid.individual.net:


"Dr. Anton T. Squeegee"


There are many ways to bug a communications device, and not all of
them are radio-based. However, in the sense of transmitters, you are
correct.

The best way to scan for such a device would be with a handheld
spectrum analyzer. Be prepared to spend at least a few thousand for a
good one.


** How does a " bug " signal stand out from all the regular
transmissions seen on the spectrum ??

Mobile phones generate powerful signals over ranges of 30 metres or
more, one of them can be the "bug".

Reality is, bug detection is a job for a *well equipped expert *
armed with a clear idea of what sort of bug he is looking for and some
knowledge of where it might be located.



well, if a signal is comming from a lamp there might be a bug...

Well no, because that signal might be a light dimmer, or connected

with the compact fluorescent bulb in there.

And "direction finding" is far easier at a distance than close up,
so you may not really know whether that odd radio signal is
coming from the lamp or the desk across the room.

Michael

 

[Phil Allison]

"Michael Black"

"Phil Allison"

** How does a " bug " signal stand out from all the regular transmissions
seen on the spectrum ??

That's why the old books would suggest something with a speaker, so you'd
get audio feedback when you were tuned to the bug.

** Not when you have no idea what frequency the bug is on, nor what
modulation mode it is using.

A full sweep of the RF spectrum, done slowly enough to generate acoustic
feedback with the bug ( ie around 10 kHz per second), would take several
days.


......... Phil

 

[Alex]

Okay how about an ultrasonic bug, can I buy a computer antenna,
download some software and turn my computer into a scannet for
ultrasonic bugs?

Phil Allison wrote:

"Michael Black"
"Phil Allison"

** How does a " bug " signal stand out from all the regular transmissions
seen on the spectrum ??

That's why the old books would suggest something with a speaker, so you'd
get audio feedback when you were tuned to the bug.



** Not when you have no idea what frequency the bug is on, nor what
modulation mode it is using.

A full sweep of the RF spectrum, done slowly enough to generate acoustic
feedback with the bug ( ie around 10 kHz per second), would take several
days.


........ Phil

 

[Phil Allison]

"Alex" <electronics_student_2007@yahoo.com> wrote in message
news:1169421125.807608.165520@v45g2000cwv.googlegroups.com...

Okay how about an ultrasonic bug,

** FUCK OFF - IMBECILE !!

can I buy a computer antenna,
download some software and turn my computer into a scannet for
ultrasonic bugs?

 

[David L. Jones]

Alex wrote:

Okay how about an ultrasonic bug, can I buy a computer antenna,
download some software and turn my computer into a scannet for
ultrasonic bugs?

You'd better be careful about those laser based eavesdropping devices
too. Something like this:
http://www.hot.ee/nuhk/laser.html

A black van could be sitting outside your house shining a laser on your
window right now...

They can also see what's on your computer monitor because you are most
likely using a non-tempest certified monitor that spews out radiation
that's begging to be picked up.

Be afraid.

Dave
P.S. You'd better check your computer as well lest someone has covertly
installed a hardware or software key logger...

 

[ehsjr]

Grostle News wrote:

I want to alter a circuit:

I took out the flash circuitry (board, bulb and battery) from a Kodak
disposable camera. The main flash electrolytic capacitor is rated at
330v and 84 mfd. ( I think 84 is the value, but don't have with me at
this time)

The cap charge comes from a single AA 1.5v cell. It looks like within
the flash circuit there is a small transformer with a transistor
oscillator circuit that does the duty of raising the voltage.

I have a non-photographic application for this type of circuit. After
removing the flash bulb I need to change the cap by replacing it with
one rated at 600-660v.

QUESTIONS (2):

(1) Would it be possible to use TWO cells in series [3v] instead of just
the one in order to charge the replacement cap at it's 660v rating?
1.5v cell---> 330v
2 × 1.5v cells [3v]-----> 660v ?

(2) Would other devices of the circuit need to be changed if the input
voltage is doubled as described?

I like the idea of getting use out of something that is commonly
available and that would ordinarily be thrown away (disposable) after
using.

Important safety reminder: if you ever experiment with one of the flash
units don't forget to discharge the capacitor before handling. When I
discharged the one in my flash circuit it was remarkably loud and
powerful enough to leave a small bead of molten chrome steel on my
screwdriver!

You can "Rube Goldberg" two disposable camera
flash units together. Remove the flash tubes.
Than do this:

1) Wire the (-) side of the cap (cap1) in camera 1
to the (+) side of the cap (cap2) in camera 2.
2) Install a spdt switch in camera 1, with the
common connected to the (+) of cap1
Then:

existing New discharge pushbutton
camera 1 __
circuit ----o o-------o o---+
| \ |
| o |
| + | |
| [Cap1] |
| | [600 volt device]
+---->|-----+ |
+ | |
[Cap2] |
| |
| |
+----------------+

Both the spdt switch and the pushbutton must
be rated for > 600V.

Ed

 

[ehsjr]

me wrote:

"Phil Allison" <philallison@tpg.com.au> wrote in
news:51giagF1kiam7U1@mid.individual.net:


"Dr. Anton T. Squeegee"


There are many ways to bug a communications device, and not all of
them are radio-based. However, in the sense of transmitters, you are
correct.

The best way to scan for such a device would be with a handheld
spectrum analyzer. Be prepared to spend at least a few thousand for a
good one.


** How does a " bug " signal stand out from all the regular
transmissions seen on the spectrum ??

Mobile phones generate powerful signals over ranges of 30 metres or
more, one of them can be the "bug".

Reality is, bug detection is a job for a *well equipped expert *
armed with a clear idea of what sort of bug he is looking for and some
knowledge of where it might be located.




well, if a signal is comming from a lamp there might be a bug...

Or a dimmer. Or a touch switch.
Or a solid state ballast.

Ed