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If I have a power supply (not a computer power supply, just a battery-replacing wall wart) and it doesn't have the usual polarity marking, how to I know if the tip is positive or negative?
Update: I couldn't find my multimeter. I did find a model number...
Started by Nosredna on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at superuser):
I also have used it for debugging RS232 signals, it's surprisingly fun to watch the LED... .
That tells me at glance the polarity.
I mean it has a hardened tip already, why.
The point to etch the polarity symbol into the case, or label.
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This one came to me while I was watching television one evening. I guess I had OD'd on politics. It's on 9 x 12 gessoed and cradled clay board. At first I had planned to put some symbols in the white space but decided it was strong enough as is. See if...
Started by Violetta on
, 6 posts
by 5 people.
Answer Snippets (Read the full thread at wetcanvas):
Quite Unique, I love the texture you achieved!
Definately makes a ... .
Understand the statement and appreciate the effort but I find it horribly sad and depressing .
Interesting indeed.
Looks like a very volatile dialogue.
Now, Judy, that is very creative.
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On Thu, 15 Oct 2009 02:26:35 -0700 (PDT), Jeff <jetusenet@earthlink.net
Hi;
I'm working on my Space Wars and have a Rev.A monitor.
I am replacing the film capacitors and have a concern regarding the
polarity. I was under the impression that they...
Started by Jeff on
, 4 posts
by 2 people.
Answer Snippets (Read the full thread at omgili):
On Thu, 15 Oct 2009 21:12:52 -0700 (PDT), Jeff < .
The symbols are interchangeable, the +
indicates polarity.
Sweet <jamesrsweet@gmail.com
Film capacitors are non-polar.
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Ok, so this is probably the wrong forum to ask in, but dont know where to put it. So thought this was most suitable.
Simply I wanna find out what this circuit symbol is http://postimage.org/image/m0hmrt63p/
I have never seen it before. Just doing some...
Started by dylanpartyon on
, 18 posts
by 8 people.
Answer Snippets (Read the full thread at digitalspy):
I also stated perhaps? The symbol for voltmeter is....
Nothing homeworky about that.
Is the positive terminal?
I haven't seen that symbol before, what is the full circuit? I think asking what the circuit symbol was within the circuit.
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On Tue, 30 Dec 2008 08:25:36 -0800 (PST), rabiticide <rabiticide@gmail.com
I'm trying to make a basic circuit with a diode. Had it not been
marked "cathode/anode" I would have not been confused - I would've
just had the electrons follow the arrow...
Started by rabiticide on
, 12 posts
by 8 people.
Answer Snippets (Read the full thread at omgili):
For example, think of the diode symbol.
Schematic symbols
assume conventional current flow.
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On Wed, 11 Nov 2009 23:41:36 -0800, Sparky <see@thesig.net
This cap was removed from a 70's-80's German industrial machine:
<http://i37.tinypic.com/10psxg3.jpg
It has no polarity markings. One terminal is common with the metal case. Is
this...
Started by Sparky on
, 13 posts
by 11 people.
Answer Snippets (Read the full thread at omgili):
On the other hand, take ....
Thanks!
Nighty-night! Lights out!
On Thu, 12 Nov 2009 19:28:25 +1100 strange if so .
If you *really* can't identify polarity from the part, trace the circuit
back to the rectifier much confirms polarity.
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On Wed, 11 Nov 2009 23:41:36 -0800, Sparky <see@thesig.net
This cap was removed from a 70's-80's German industrial machine:
<http://i37.tinypic.com/10psxg3.jpg
It has no polarity markings. One terminal is common with the metal case. Is
this...
Started by Sparky on
, 12 posts
by 10 people.
Answer Snippets (Read the full thread at omgili):
On the other hand, take the - to be a 1, and the other symbol to be a 4
with a bit.
Thanks!
Nighty-night! Lights out!
On Thu, 12 Nov 2009 19:28:25 +1100 strange if so .
Much confirms polarity.
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On Sun, 28 Dec 2008 00:12:17 -0800 (PST), "Oleg Kaizerman(gebe)" <KAIZERO1@gmail.com
lost the power supply
anyone have an idea if the central tip is positive or negative dc
( 5v)
best
oleg
Started by Oleg Kaizerman(gebe) on
, 5 posts
by 4 people.
Answer Snippets (Read the full thread at omgili):
What DOES vary sometimes.
Jhyslop_ramps2@dreampossible.ca
At the risk of stating the obvious: many devices have a symbol
indicating the polarity that there is only one standard polarity
for 5v, but I would check the specs.
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16 Feb 2012 12:34 Code Vision, programowanie PWM na Attiny13, błąd: UNDEFINED SYMBOL 'OCROA' Witam. Napisałem prosty program, by przetestować wyjścia PWM w attiny13.
Podczas kompilacji wyskakują następujące błędy:
UNDEFINED SYMBOL 'OCROA'
&
UNDEFINED ...
Started by ptys899 on
, 9 posts
by 3 people.
Answer Snippets (Read the full thread at elektroda):
Korzystając z okazji, mam jeszcze pytanie Attiny13, błąd: UNDEFINED SYMBOL 'OCROA....
SYMBOL 'OCROA' 16 Feb 2012 13:08 Re: Code Vision, programowanie PWM na Attiny13, błąd: UNDEFINED SYMBOL 'OCROA' He he he, racja :D
Poprawiłem i działa.
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This is posted at the top of shabiat.com. They must be getting ready to announce something important. Hope Awash is near a TV to watch it as it happens.
ERI-TV viewers on Arabsat can follow our broadcast on the following new parameter:
Frequency 12360...
Started by revelations on
, 10 posts
by 7 people.
Answer Snippets (Read the full thread at ethiopianreview):
On the following new parameter:
Frequency 12360
Polarity Vertical
Symbol Rate 3/4
Fec 27500
http 27500
Polarity Horizontal
FEC ¾
ARABSAT: BADR4 at 260 East
Frequency 11938 MHZ
Symbol Rate 27500 the following satellite transmission....
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