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I have a need to control a light fixture in my home. At a certain time I
need the light to come on and later on the light should go out. The problem
is that I need it to change states slowly. Load could be anything between
100 and 600 watts.
It would be nice to find something that fits in a 1 gang electrical box, but
I haven't been able to find anything.
I also have the need for something similar, controlling about a dozen LEDs,
for the lighting in a fish tank.
Does anyone have any idea how I can do these?
Nothing wrong with a transformer as long as it doesn't saturate. Thesal2 wrote:
How can I increasing output voltage/amplify my laptop's sound card
headphone jack. Tia sal2
Greetings All
I'm generating different sound waves using my laptop
and outputting the sound via my laptop's sound card headphone jack.
I need to increase the output voltage / amplify the output
signal to at least 5v while not adding to much noise to the
signal. What's the best way to go about this?
Preamp/Amplifier/mixer Can anyone recommend a low cost solution?
thanks sal2
Sorry it this is repeated had problems with my posting server
I might be going in totally the wrong direction here, but I'm sure that
someone will correct me. If you're just looking for increased voltage
(not increased power), what about an audio transformer?
Cheers,
Nicholas Sherlock
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Thensell the patent for Big Buxs.The device that I will sketch vaguely doesn't exist, but if I can
imagine it anyone can.
I imagined a similar apparatus to a Converter or Decoder that it could
be placed over a television set, with an infrared sensor what would
receive a lightly more complicated signal that that of a remote control
of TV, since it would come from a wireless standard infrared keyboard
for PC, with incorporate touchpad to replace the mouse.
Besides the traditional input of video signal by coaxial cable and the
output to the TV, this apparatus would have a connection with a PC that
could be by means of an UTP cable with connectors RJ-45 for a standard
Ethernet 100BaseT LAN network, or by means of the same coaxial cable.
In this way, this device, when connecting the main entrance device (the
wireless keyboard with touchpad), to the PC and the television, it
would transform to this last one into the Monitor (the main exit
device) of a Terminal (without CPU, memory, hard disk neither CD
reader), and to the PC into a Server of the LAN that would contribute
the whole necessary hardware and software.
This device should not be much more expensive that the sum of its main
components: a network card, a video card, a power source, a converter
DAC/ADC, etc.
Due to the notable difference of prices, it is much more common to find
more than a TV in the homes that to find more than a PC, for what I
believe that the potential market is quite big.
And it could be a solution to a quite common problem that one has when
somebody wants to use the PC and he/she has to wait their turn because
it is being used by another member of the family.
The main difficulty that I considered it is that I think that a great
political obstacle should exist so that an apparatus like this doesn't
exist after more than a decade of presence of the technology that could
have made it possible: I thought that their existence would not have
been allowed because it would prevent the Big Brother to know exactly
who is doing what with the computer. I think that to hinder this
surveillance is vital because without privacy there is not freedom, and
without freedom the life is not worthwhile.
Write a patent on that; use your ideas and (maybe) terminology.
The device you describe is no different from a PC-based dumb terminalThe device that I will sketch vaguely doesn't exist, but if I can
imagine it anyone can.
I've bought a cheap amp that said "AC3 input" in the manual. On the back are 4 sets of inputs. 3 of them are standard dual phonos, marked tape, cd, and tuner (left and right of each). The other is marked AC3, and also has two phono sockets (marked left and right). I was under the impression that AC3 was the bitstream format of dolby surround sound and required only ONE phono connector (or an optical toslink connector). Why do I have two phonos? I don't have the ability to give it a dolby bitstream yet to test it (waiting on a part), but I did try connecting a standard stereo analog input to the AC3 phono connectors, and it worked. Should it have? Could it be an analog/digital input?
Perhaps you have a brand and type of the amp ?
Peter Hucker wrote:
I've bought a cheap amp that said "AC3 input" in the manual. On the back are 4 sets of inputs. 3 of them are standard dual phonos, marked tape, cd, and tuner (left and right of each). The other is marked AC3, and also has two phono sockets (marked left and right). I was under the impression that AC3 was the bitstream format of dolby surround sound and required only ONE phono connector (or an optical toslink connector). Why do I have two phonos? I don't have the ability to give it a dolby bitstream yet to test it (waiting on a part), but I did try connecting a standard stereo analog input to the AC3 phono connectors, and it worked. Should it have? Could it be an analog/digital input?
When I get the TOSLINK cable, I'll be sending it back if it doesn't work....Skytronic SV-2803 Digital Kareoke Amplifier.
https://www.preisroboter.de/ergebnis9014557.html
Mine is similar to the silver one shown under SV-2803, but mine is black, and the LED display is a litttle redesigned.
I see that other models on that page actually mention "AC3" and "dolby surround" but mine doesn't, I'm getting more confused by the minute!
I can't see why there would be 5 outputs marked as such if it was just aThe Skytronic page doesn't have it:
http://www.skytronic.co.uk/search/index.php?cp=81
It has 5 speaker outputs makred "centre", "main left", "main right", "surround left", and "surround right".
The outputs for example are either 6 ohms, 4-8 ohms, or 8-16 ohms,The instructions are very cheaply printed and contradict themselves and the back of the amp in several places.
Looks like either my amp is not dolby at all, or the AC3 input doublesI've got an adaptor to take the toslink from my sky box, and the output of that adaptor is ONE phono socket.
On the back are 4 sets of inputs. 3 of them are standard dual phonos,On Thu, 08 Jan 2009 11:54:20 -0000, Dutchie <Dutchie@dutchie.com> wrote:
Perhaps you have a brand and type of the amp ?
Peter Hucker wrote:
I've bought a cheap amp that said "AC3 input" in the manual.
Technically AC3 is 6 inputs (5.1), but usually one connector.
I don't see anything wrong, really.
Just hook it up and see if it works !
Peter Hucker wrote:
Skytronic SV-2803 Digital Kareoke Amplifier.
https://www.preisroboter.de/ergebnis9014557.html
Mine is similar to the silver one shown under SV-2803, but mine is black, and the LED display is a litttle redesigned.
I see that other models on that page actually mention "AC3" and "dolby surround" but mine doesn't, I'm getting more confused by the minute!
When I get the TOSLINK cable, I'll be sending it back if it doesn't work....
The Skytronic page doesn't have it:
http://www.skytronic.co.uk/search/index.php?cp=81
It has 5 speaker outputs makred "centre", "main left", "main right", "surround left", and "surround right".
I can't see why there would be 5 outputs marked as such if it was just a
stereo amp.
The instructions are very cheaply printed and contradict themselves and the back of the amp in several places.
The outputs for example are either 6 ohms, 4-8 ohms, or 8-16 ohms,
depending on what you read.
But that doesn't concern me, what's annoying is the instructions refer
to SIX AC3 inputs suggesting to connect them to a DVD player.
There are TWO on the back, not six.
And I thought AC3 was ONE input, digital all channels on one phono
socket or TOSLINK connector?
I've got an adaptor to take the toslink from my sky box, and the output of that adaptor is ONE phono socket.
Looks like either my amp is not dolby at all, or the AC3 input doubles
s analog aswell?
Would this be possible?
I still don't managed to get hold of a TOSLINK cable, so I can't try it yet.
On Thu, 08 Jan 2009 11:54:20 -0000, Dutchie <Dutchie@dutchie.com> wrote:
Perhaps you have a brand and type of the amp ?
Peter Hucker wrote:
I've bought a cheap amp that said "AC3 input" in the manual.
On the back are 4 sets of inputs. 3 of them are standard dual phonos,
marked tape, cd, and tuner (left and right of each). The other is
marked AC3, and also has two phono sockets (marked left and right). I
was under the impression that AC3 was the bitstream format of dolby
surround sound and required only ONE phono connector (or an optical
toslink connector). Why do I have two phonos? I don't have the ability
to give it a dolby bitstream yet to test it (waiting on a part), but I
did try connecting a standard stereo analog input to the AC3 phono
connectors, and it worked. Should it have? Could it be an
analog/digital input?
I'm not a PIC programmer yet, but I looked up the 16F627, and they haveHi,
I recently bought the pic programmer kit from velleman and need some code
quick. I need to measure the width of pwm pulses coming from a r/c rx. It is
a pic16f627-04p. Can anyone provide me with the code? I think the language
is assembly.
No, you're both wrong. The compressor is drawing 1080VA, which is onlyOn Tue, 28 Jun 2005 10:11:21 -0500, "Pat Ziegler" <pzig@weisd.com> wrote:
Paul:
A couple of things to help you understand the problem here.
First, a little watts law. W=I(amps) X V(volts)
So, 240V X 2.4A = 576W
At start, 240V AX 4.5A = 1080W
To convert Watts to VA (volt amps) We need to know the "Power
Factor"
of the generator.
No, you need to know the power factor of the load. ---
I would guess it is something like .8 So, you would take 1080W X .8 =
864 VA
---On Tue, 28 Jun 2005 13:21:42 -0500, John Fields wrote:
On Tue, 28 Jun 2005 10:11:21 -0500, "Pat Ziegler" <pzig@weisd.com> wrote:
Paul:
A couple of things to help you understand the problem here.
First, a little watts law. W=I(amps) X V(volts)
So, 240V X 2.4A = 576W
At start, 240V AX 4.5A = 1080W
To convert Watts to VA (volt amps) We need to know the "Power
Factor"
of the generator.
No, you need to know the power factor of the load. ---
I would guess it is something like .8 So, you would take 1080W X .8 =
864 VA
No, you're both wrong.
You're asking a lot. Insect exoskelatons don't conduct real well, and if youLooking to build a simple circuit that will fire a relay if an insect gets
across the input terminals. I'm thinking a simple Op Amp Comparator would
work.. The end result is to release the shutter on a 35mm canera. Need to
keep the camera from taking to many pictures so a delay between shutter
releases would be a plus...