PRC as a amplifier in GPS question.

test

"Jamie" <jamie_5_not_valid_after_5_Please@charter.net> wrote in message
news:10o77ojm35m3rfb@corp.supernews.com...
look in DigiKey.
they have a 350 WV @ 1200 Uf with a
40 x 60 mm size radio leads. that be the type that has both leads coming
out of one end..
Digi's number.
P10058-ND
cost aprox $15.00 each.

dhp wrote:
I'm trying to source some Hitachi photographic electrolytic capacitors.
Part number: CE62P, 1200MFD 330WV.
Physical dimensions are 35mm diameter and 63mm long. I require 12 units.
Click to expand...
 
On Wed, 9 Mar 2005 13:37:09 -0500, "Michael" <michael_sakha@yahoo.ca>
wrote:

test

"Jamie" <jamie_5_not_valid_after_5_Please@charter.net> wrote in message
news:10o77ojm35m3rfb@corp.supernews.com...
look in DigiKey.
they have a 350 WV @ 1200 Uf with a
40 x 60 mm size radio leads. that be the type that has both leads coming
out of one end..
Click to expand...
---
That be "radial"...

--
John Fields
 
"Michael" <michael_sakha@yahoo.ca> writes:

"Jamie" <jamie_5_not_valid_after_5_Please@charter.net> wrote in message
news:10o77ojm35m3rfb@corp.supernews.com...
look in DigiKey.
they have a 350 WV @ 1200 Uf with a
40 x 60 mm size radio leads. that be the type that has both leads coming
out of one end..
Digi's number.
P10058-ND
cost aprox $15.00 each.
Click to expand...
Note that these are not photoflash-rated capacitors. They may work or
they may fail quickly.

--- sam | Sci.Electronics.Repair FAQ Mirror: http://repairfaq.ece.drexel.edu/
Repair | Main Table of Contents: http://repairfaq.ece.drexel.edu/REPAIR/
+Lasers | Sam's Laser FAQ: http://repairfaq.ece.drexel.edu/sam/lasersam.htm
| Mirror Sites: http://repairfaq.ece.drexel.edu/REPAIR/F_mirror.html

Note: These links are hopefully temporary until we can sort out the excessive
traffic on Repairfaq.org.

Important: Anything sent to the email address in the message header above is
ignored unless my full name is included in the subject line. Or, you can
contact me via the Feedback Form in the FAQs.

dhp wrote:
I'm trying to source some Hitachi photographic electrolytic capacitors.
Part number: CE62P, 1200MFD 330WV.
Physical dimensions are 35mm diameter and 63mm long. I require 12 units.
Click to expand...
 
Michael Black wrote:
Bob Parker (bobpdeletethis@despammed.com) writes:
Matt2 - Amstereo <amstereo@ToptusDOTcomDOTau> wrote:

its probably a 455khz version E, these are found in analogue am
radios and any other ir remote control.

I've seen 455kHz resonators in remotes before, but I'm pretty sure
I've seen other frequencies too. Thanks for the suggestion. I'll give
it a try unless someone can positively tell me that it's another
frequency.

Yes, I have no idea what that one uses, but most definitely there
is not one frequency used for every remote.
Click to expand...
Not one frequency, necessarily; but usually only a very few resonators. The
last time I had one which was (physically) broken, I pulled another from the
first nondescript remote I found in the junk box, and it worked fine.

Remember, many frequencies can be synthesized from one crystal. Try one out
of a junk remote and see if it works...can't hurt.

jak

Michael
Click to expand...
 
I hate to sound like a silly tit, But have you rung Sharp and asked them ?

Sometimes you do get the jack pot strange as it might seem.




"Bob Parker" <bobpdeletethis@despammed.com> wrote in message
news:re5j31hsogjlbl79rn8niaijl2n6arp84t@4ax.com...
G'day,
I've been asked to help fix a Sharp CRMC-A310JBEO remote control
for an air conditioner. All that seems to be wrong is that it's been
dropped and the ceramic resonator's broken into tiny bits, making it
impossible to see what frequency was marked on it.
If someone can tell me what the resonator frequency is, I'll be
massively grateful! :)

Regards,
Bob
 
John Saunders wrote:

I haven't tried the transmitter out of Sydney yet, too much
interference here. Pity it doesn't offer an alternative
frequency.
Click to expand...
(small FM xmiter in MP3 player)

How are you with a soldering iron?
You might be able to change the crystal oscillator,
assuming it has one. Otherwise, just a capacitor.
 
mlw wrote:

Interesting criteria
Click to expand...
Indeed.

Speed of sound is about 340 meters per second, if you want a range of 10
meters, that is a round trip of 20 meters. 340 meters per second / 20
meters round trip, that means a theoretical maximum of about 17 readings
per second, and a practical max of about 10.
Click to expand...
Unless, he alters the frequency for each reading. Using different
frequencies, and only listening for the right frequency, you might make
it work... but then again, Ranging RADAR is better.


--
MVH,
Vidar

www.bitsex.net
 
mlw <mlw@nospam.no> wrote in news:j4OdnRCx5a4kud7fRVn-pw@comcast.com:

Yugo> wrote:

Do you know any small size, light weight distance sensor with the
following specs;
* Range : 10cm to 1000cm (10meter )
* Rate : 50 Hz (50 measurements/sec)
* Accuracy : 1cm
* Must operate on any surface (except transparent surfaces like
glass) * Power requirement : Less than 5W
* Weight : Lighter than 500grams
* Vibrartion sensitivity : Must operate 0-500Hz

Interesting criteria

Speed of sound is about 340 meters per second, if you want a range of
10 meters, that is a round trip of 20 meters. 340 meters per second /
20 meters round trip, that means a theoretical maximum of about 17
readings per second, and a practical max of about 10.

Unless you can alter your specifications, SONAR is out of the question
Click to expand...
Not necissarily -
www.batforblind.co.nz
(though there is a "retrace" period to deal with)

M
 
mlw wrote:

Yugo> wrote:


Do you know any small size, light weight distance sensor with the
following specs;
* Range : 10cm to 1000cm (10meter )
* Rate : 50 Hz (50 measurements/sec)
* Accuracy : 1cm
* Must operate on any surface (except transparent surfaces like glass)
* Power requirement : Less than 5W
* Weight : Lighter than 500grams
* Vibrartion sensitivity : Must operate 0-500Hz


Interesting criteria

Speed of sound is about 340 meters per second, if you want a range of 10
meters, that is a round trip of 20 meters. 340 meters per second / 20
meters round trip, that means a theoretical maximum of about 17 readings
per second, and a practical max of about 10.

Unless you can alter your specifications, SONAR is out of the question and
you'll have to use rangning RADAR.

Ranging RADAR is expensive because, unlike police speed traps which use
dopler frequency shift on the bounced return signal, a ranging radar
system, like a ranging sonar system, needs to measure between send and
recieve. Where sound travels at a pokey 240 meters per second and can be
easily measered, light travels a little less than 300,000,000 meters per
second, and requires some real precision to measure. Especially at the cm
to 10 meter range.


So?
Click to expand...
Radio waves travel about 11 inches per nanosecond (30cm); which is a
long time.
So 10cm is about 0.3nSec (one way) which means some special care must
be taken or subterfuge - like variable CW: make the time of flight a
part of an oscillator and then measure the frequency.
Makes the job a lot easier, methinks.
1cm accuracy translates to 2cm round trip variance or 60pSec if one
thinks of pulses.
Lessee...say 2000cm max round trip is 66.67nSec time for 14.999MHz;
1998cm round trip is 66.60nSec time for 15.015MHz.
Seems to be easily resolvable.
Just build an amplifier and it will oscillate...
 
Ranging radar is very much more difficult than dopler radar. Dopler radar
is
fairly easy to do, $100 bucks or so -- hell you can buy dopler radar off
the net to measure your pitching speed.
Click to expand...
Where ? Any source please?
 
CHIRP
MEASURE RX BEAT FREQ = DISTANCE
SAMPLE AT 50CPS
"Vidar Lřkken" <njus@vidarlo.net> wrote in message
news:QlH0e.3997$4c.508241@juliett.dax.net...
: mlw wrote:
:
: >
: > Interesting criteria
:
: Indeed.
:
: > Speed of sound is about 340 meters per second, if you want a range
of 10
: > meters, that is a round trip of 20 meters. 340 meters per second /
20
: > meters round trip, that means a theoretical maximum of about 17
readings
: > per second, and a practical max of about 10.
:
: Unless, he alters the frequency for each reading. Using different
: frequencies, and only listening for the right frequency, you might
make
: it work... but then again, Ranging RADAR is better.
:
:
: --
: MVH,
: Vidar
:
: www.bitsex.net
 
"mlw" <mlw@nospam.no> wrote in message
news:t_SdnQ-HBrOuad7fRVn-gg@comcast.com...
Robert Baer wrote:

Vidar Lřkken wrote:

Yugo wrote:

Do you know any small size, light weight distance sensor with the
following specs;
* Range : 10cm to 1000cm (10meter )
* Rate : 50 Hz (50 measurements/sec)
* Accuracy : 1cm
* Must operate on any surface (except transparent surfaces like
glass)
* Power requirement : Less than 5W
* Weight : Lighter than 500grams
* Vibrartion sensitivity : Must operate 0-500Hz

Use of light or radio pulses (as in RADAR) is just as easy as use of
sound pulses; timing is easy.
Been around since the 1940's.

Ranging radar is very much more difficult than dopler radar. Dopler radar
is
fairly easy to do, $100 bucks or so -- hell you can buy dopler radar off
the net to measure your pitching speed.

Ranging radar has to emit a pulse and measure the time delay from transmit
and recieve. With SONAR, this is dist = (340/2)/T (we divide by two
because
echo is a two way trip), well in the millisecond range. With RADAR this is
dist = (300000000/2)/T. If you are measuing meters you are in the nano
second range. If you are trying to measure centimeters you are in the pico
second range.

This is not to say it can't be done, but it would be very expensive.
Click to expand...
There are ways round this.

If you transmit continuously a signal modulated with a PRBS pattern, then
the receiver can find the range at any instant by correlation - basically
find the time slip that gives maximum correlation between transmitted and
received patterns. This also works for multiple objects in the FOV. Hardware
wise this would probably be easiest done with a small fpga.

Laser rangefinders have a similar trick. Basically you modulate the
transmitted signal with several different frequencies, and measure the phase
difference between Tx and Rx signal for each one. With a judicious choice of
frequencies, there is only a single range at which a given set of phase
values can occur.

The Tx and Rx sensors need to be physically separated so that the Rx does
not get overwhelmed.

Yet another approach feeds back the received signal to the transmitter, so
that the whole system oscillates. The frequency of oscillation is directly
related to the round trip delay and hence distance.

Have fun !
Dave




Posted Via Nuthinbutnews.Com Premium Usenet Newsgroup Services
----------------------------------------------------------
** SPEED ** RETENTION ** COMPLETION ** ANONYMITY **
----------------------------------------------------------
http://www.nuthinbutnews.com
 
"mlw" <mlw@nospam.no> wrote in message
news:t_SdnQ-HBrOuad7fRVn-gg@comcast.com...
Robert Baer wrote:

Vidar Lřkken wrote:

Yugo wrote:

Do you know any small size, light weight distance sensor with the
following specs;
* Range : 10cm to 1000cm (10meter )
* Rate : 50 Hz (50 measurements/sec)
* Accuracy : 1cm
* Must operate on any surface (except transparent surfaces like
glass)
* Power requirement : Less than 5W
* Weight : Lighter than 500grams
* Vibrartion sensitivity : Must operate 0-500Hz

Use of light or radio pulses (as in RADAR) is just as easy as use of
sound pulses; timing is easy.
Been around since the 1940's.

Ranging radar is very much more difficult than dopler radar. Dopler radar
is
fairly easy to do, $100 bucks or so -- hell you can buy dopler radar off
the net to measure your pitching speed.

Ranging radar has to emit a pulse and measure the time delay from transmit
and recieve. With SONAR, this is dist = (340/2)/T (we divide by two
because
echo is a two way trip), well in the millisecond range. With RADAR this is
dist = (300000000/2)/T. If you are measuing meters you are in the nano
second range. If you are trying to measure centimeters you are in the pico
second range.

This is not to say it can't be done, but it would be very expensive.
Click to expand...
There are ways round this.

If you transmit continuously a signal modulated with a PRBS pattern, then
the receiver can find the range at any instant by correlation - basically
find the time slip that gives maximum correlation between transmitted and
received patterns. This also works for multiple objects in the FOV. Hardware
wise this would probably be easiest done with a small fpga.

Laser rangefinders have a similar trick. Basically you modulate the
transmitted signal with several different frequencies, and measure the phase
difference between Tx and Rx signal for each one. With a judicious choice of
frequencies, there is only a single range at which a given set of phase
values can occur.

The Tx and Rx sensors need to be physically separated so that the Rx does
not get overwhelmed.

Yet another approach feeds back the received signal to the transmitter, so
that the whole system oscillates. The frequency of oscillation is directly
related to the round trip delay and hence distance.

Have fun !
Dave




Posted Via Nuthinbutnews.Com Premium Usenet Newsgroup Services
----------------------------------------------------------
** SPEED ** RETENTION ** COMPLETION ** ANONYMITY **
----------------------------------------------------------
http://www.nuthinbutnews.com
 
Michael A. Terrell wrote:
WDino wrote:

I am using them with a Picaxe08 micro to monitor the movement of
cattle via a
small solar-powered collar around their neck. And for RC airplanes
with a tiny
300 MHz (approx) transmitter from Oatley.


Digital cattle? Sounds like something from a bad SCI-FI movie. ;)

--
Click to expand...
Tracking cattle by GPS seems to be a popular thing to do. There is a
picture here. http://ticsys.tamu.edu/entolcra.htm

Peter
 
Lifted from rec.audio.tubes and uk.rec.audio newsgroups today. This may
interest you out there!


On Wed, 23 Mar 2005 03:13:37 GMT, "Rio sound & vision"
<riosound@bigpond.net.au> wrote:

Greetings all,

We at Rio Sound & Vision are looking for a full time sales person. They
must
be eager to learn and have a good handle on home cinema and Hi-Fi. You
will
not need to know the full workings of the brands we sell, as we can train
the right person for the job. We carry brands such as B&W, Harman / Kardon,
Yamaha, Boston, M&K, Adcom, Celestion, Toshiba Etc...

If you think you are up to the task and are looking for a new and
exciting career in a fantastic field, email, fax or mail your resume to the
below address. We are based in Melbourne by the way.


Kind Regards

Rio Sound & Vision



Rio Sound & Vision

414 St. Georges Rd
Thornbury 3071
PH: 9416 9943
Fax: 9416 9272
Email: riosound@bigpond.net.au
Click to expand...
Dear Mr. Rio,

I think it's about time my boy Philip had a real job. He's been
running a
muck since he moved to Sydney and I'm sure that cramped and damp
little
bed-sit flat isn't doing him any good either. He doesn't have any
friends
up there and a job in Melbourne would mean he can come and live closer
to
his mum where I can keep an eye on him.

Phillip says he's an expert on hi-fi. He's got one of those CD
thingies he
bought back in 1983 which he still uses, built his own speakers from a
kit
and he uses an amplifier he fixed up after collecting it from the
verge
throw out a couple of years ago. I noticed in your advertisement that
you
will offer to train him. Just as well, because just between me and
you I
think he has a bit of catching up to do.

He writes to me every so often and says his toaster fixing business
isn't
doing too well so I'm hoping you might consider giving my boy a job in
your
store. He isn't too keen on that HT stuff but I'm sure you will bring
him
to his senses sooner of later. He doesn't have good people skills
even
though he has frequently said "...all my posts are brilliant examples
of
communication, either on some technical point related to hi-fi..... ".
Perhaps you can find him a job keeping the storeroom tidy where no one
will
hear him swearing?

I hope you don't sell Quad speakers. Philip isn't very good at those.
A
couple of years back he bought a pair while I was up visiting him in
his
Sydney bed-sit. Within hours of getting them home he was taking one
of them
apart with a screwdriver. There was this terrible sparking and a
small puff
of smoke came out of the back of one of them. Frightened the hell out
of
me. It didn't work after that. Philip assured me the speaker must
have been
faulty and was going to take them back first thing next week and
demand his
money back.

Now I know my Philip is devoted to his work. He's never been married
and
doesn't have a girlfriend, although I'm not completely sure of that,
as
there was a pink tutu hanging in his wardrobe along with some red
glitter
stiletto shoes. Anyhow Philip has never mentioned her and I surely
have not
been introduced.

Philip's Education:
Catholic schooling
4 years of Latin 1
University drop out.

Please, please, please give my Philip a meaningful job. Heaven knows
he
needs the money and a way to usefully occupy his time.
you can reach him on 02 9799 8242

Sincerely,

Mrs. Allison (Phil's mum).
 
Sorry, I omitted handle of poster to above item!

MrsAllsion@repost.com <MrsAllsion@repost.com>


"Jim Gregory" <jim.greg@ntlworld.com> wrote in message
news:R_N3e.3947$vv2.787@newsfe2-gui.ntli.net...

Lifted from rec.audio.tubes and uk.rec.audio newsgroups today. This may
interest you out there!
Click to expand...
 
Well Done, funniest thing i have read in a while.
Cheers
Joe
"Jim Gregory" <jim.greg@ntlworld.com> wrote in message
news:KgO3e.3689$p71.167@newsfe3-gui.ntli.net...
Sorry, I omitted handle of poster to above item!

MrsAllsion@repost.com <MrsAllsion@repost.com


"Jim Gregory" <jim.greg@ntlworld.com> wrote in message
news:R_N3e.3947$vv2.787@newsfe2-gui.ntli.net...

Lifted from rec.audio.tubes and uk.rec.audio newsgroups today. This may
interest you out there!
Click to expand...
 
Yeah I nearly choked on my wild turkey and coke
when I saw that classic.
 
You must log in or register to reply here.

Welcome to EDABoard.com

Sponsor

Back
Top