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<title>Electronics forum - dslreports.com community</title>
<link>http://www.dslreports.com/forum/electronics</link>
<description>Electronics forum current topics</description>
<language>en</language>
<copyright>Copyright 2007, dslreports.com</copyright>
<pubDate>Sat, 11 Feb 2012 14:41:31 EDT</pubDate>
<lastBuildDate>Sat, 11 Feb 2012 14:41:31 EDT</lastBuildDate>

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<item>
<title>LED street lamps</title>
<link>http://www.dslreports.com/forum/remark,26744630</link>
<description><![CDATA[At first I thought the covers fell off the lights but then I noticed the whole street was like that, happen to look up and you can see the two row of LED's it's like a half figure eight pattern.

surprising it was brighter then the HPS lights they replaced and a better CRI.

Has anyone else town's switched to this lighting for streets?

I'd have to bring my 200 mm lens to get a close up of the fixture.]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,26744630</guid>
<pubDate>2012-01-08 21:30:35</pubDate>
</item>

<item>
<title>Indestructible class AB audio amplifier design?</title>
<link>http://www.dslreports.com/forum/remark,26870920</link>
<description><![CDATA[There seems to be an awful lot of different variations on class AB amplifier design, so I thought I'd probe the minds of this forum to see if anyone has something to recommend.

Basically, I'm looking at putting together an amplifier capable of delivering up to 500W RMS into a 4 ohm load, 10Hz to 20kHz.

Audio quality should be fairly good, but doesn't need to be audiophile-worthy, the goal is not to get amazing sound quality, but it should still sound respectable. 

It should also be extremely rugged. The amplifier should be expected to survive indefinitely to low-impedance and short circuit conditions without shutting down. Over-driving the amplifier into severe clipping should also not harm the amplifier (blowing up the speakers is ok on the other hand).

Why? Speakers aren't the only thing I'm going to be driving with this amplifier.

I'm not looking for a complete pre-done schematic, just a base design and ideas that I can build on and modify to suit my needs.]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,26870920</guid>
<pubDate>2012-02-08 19:31:13</pubDate>
</item>

<item>
<title>Belden For In Wall Serial</title>
<link>http://www.dslreports.com/forum/remark,26871241</link>
<description><![CDATA[Im doing some home theater stuff and was wondering what you might reccomend for running in wall for serial rs232 to a TV / projector and extron controller. Which has a phonix screw down terminal. Is there a point to running a 9 conductor cable or should I just find a single pair with sheild? What do you recommend from belden ]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,26871241</guid>
<pubDate>2012-02-08 20:53:49</pubDate>
</item>

<item>
<title>Make an Illuminated Keyboard - for about $5.</title>
<link>http://www.dslreports.com/forum/remark,26872611</link>
<description><![CDATA[I found this interesting.

http://science.discovery.com/brink/kip-kay/illuminated-keyboard/illuminated-keyboard.html

However, I have at least one question.

Do you agree to use the scroll lock key OR would you recommend using the pause/break on the keyboard?

Thanks.
--
Please use the "yellow (IM) envelope" to contact me and please leave the URL intact.]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,26872611</guid>
<pubDate>2012-02-09 09:30:47</pubDate>
</item>

<item>
<title>is it normal for a blu-ray player to make noise?</title>
<link>http://www.dslreports.com/forum/remark,26869197</link>
<description><![CDATA[I just got a refurbished blu-ray player from best buy and it is making alot of noise when reading discs. Is this normal or should I return the player?]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,26869197</guid>
<pubDate>2012-02-08 13:24:57</pubDate>
</item>

<item>
<title>Type of Tape</title>
<link>http://www.dslreports.com/forum/remark,26859609</link>
<description><![CDATA[I am repairing a couple of Apple laptops for a neighbor, on the back of the LCD's there is a yellow tape used to hold the ribbon cable to the back of the LCD. Also on one of the units there is a black tape over the connector to prevent the ribbon from sliding out or moving. Anyway I am wondering if anyone here knows what kind of tape that is and where I could purchase it from. I have been doing more repairs on laptops lately and figured it might be a good idea to have some of this tape on hand. ]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,26859609</guid>
<pubDate>2012-02-06 12:21:37</pubDate>
</item>

<item>
<title>Does this look like a good deal? (Sencore LC102 on eBay)</title>
<link>http://www.dslreports.com/forum/remark,26855356</link>
<description><![CDATA[http://www.ebay.com/itm/SENCORE-LC-102-CAPACTOR-INDUCTOR-ANALYZER-/270904759941?pt=LH_DefaultDomain_0&hash=item3f132e9685
Untested and no return, but about half price.  :hmm: 
No accessories either.   :huh: 
Does anyone know how much the probes would cost? (most likely need to be purchased directly from Sencore) 

Also, does anyone know the difference between the LC102 and LC103?   The latter is the newer model, seem to be somewhat less common, and go for about $200 - $400 more on eBay.
--
Wacky Races 2012!]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,26855356</guid>
<pubDate>2012-02-04 23:25:53</pubDate>
</item>

<item>
<title>Stuff on Ebay from china.</title>
<link>http://www.dslreports.com/forum/remark,26853973</link>
<description><![CDATA[Here is what I got for $39.99 shipped in a little under 10 days. 

The "specs" 7W at 76-120Mhz..

Not as nasty as a bit of work as it could have been. 
Pics: http://miatajim.smugmug.com/Other/Radio-Xmit]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,26853973</guid>
<pubDate>2012-02-04 15:22:53</pubDate>
</item>

<item>
<title>I need some brains to pick :)</title>
<link>http://www.dslreports.com/forum/remark,26719109</link>
<description><![CDATA[I'm stumped and maybe someone here can help.. long story short I was going to buy a 3 LED star in a amber color and run it with say like a 700mA driver.. well I thought about that but what I don't understand is how I will get the dual brightness from the LED?
--
It's NOT Ni-kon It's NE-KON!


LG is NOT Lifes Good It's Lucky Goldstar!

]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,26719109</guid>
<pubDate>2012-01-02 16:19:42</pubDate>
</item>

<item>
<title>Telephone In-Use Light</title>
<link>http://www.dslreports.com/forum/remark,26853817</link>
<description><![CDATA[A friend is concerned that his home telephone is "bugged". He sent me a video showing himself carrying his unplugged ATT phone (not sure whether its corded or cordless) from inside to outside his house. Inside the house and for about 30 feet from the door the in-use light is blinking. At longer distance the blinking stops. As he goes back towards the house the blinking resumes. He is interpreting this to mean that his phone has been bugged.  

Is there an explanation for this? I've read that if the phone has a battery the in-use light will blink if the battery is connected wrong.
If this is the situation, why would the blinking depend on distance?

Thanks  ]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,26853817</guid>
<pubDate>2012-02-04 14:26:03</pubDate>
</item>

<item>
<title>2x 15A circuits vs. 20A circuits....</title>
<link>http://www.dslreports.com/forum/remark,26849020</link>
<description><![CDATA[I'm redoing my basement and it will be the new area for my entertainment center.

2 computers (Tower + monitor + Speakers)
55" LED TV
Sound system for TV
Wii
HTPC
LAN switch
Router
Modem

Everything will be interconnected physically through LAN, HDMI, RCA audio and some VGA cables too.

I want to give this complete gear the best power feed possible to avoid any noise, humming, buzzing, whatevers. I'll make whatever circuits needed for them.

Ideally I'd need more than 15A circuit for all that stuff (Not that 15A wouldn't do it, but it would probably cause voltage drops when everything is up and running at the same time).

What will be best to avoid any sort of interferences/loops/whatever?

1 x 20A circuit?
2 X 15A circuits? (computers one one, rest on the other)

If I go 2 x 15A circuits, should each of them be on a different leg in the electric panel? (Split-phase 3-wire)

If I go 2 x 15A circuits on different legs, should I use a shared neutral?

I already have proper guidance on HOW to make any of those circuits. Any of them is easy as pie and very little price differnece I just want to know which of these is best for electronics.

Thanks!]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,26849020</guid>
<pubDate>2012-02-03 10:32:34</pubDate>
</item>

<item>
<title>POE and Ethernet Connectors</title>
<link>http://www.dslreports.com/forum/remark,26839884</link>
<description><![CDATA[I'm using POE (802.3af) to power cameras at distances of around 200 feet.  I'm well under the 100 meter max distance, however, I am using two Ethernet connectors for the run.  One for the camera (not sure why they built it this way) and another because I misjudged the distance and had to add more Ethernet cable.  Does anyone know how much a connector degrades the strength of the power?  I'm having intermittent connection issues and I'm wondering if the connectors are the cause of this.  Any thoughts would be greatly appreciated!  Thanks!]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,26839884</guid>
<pubDate>2012-02-01 13:25:24</pubDate>
</item>

<item>
<title>LG 47LW5600</title>
<link>http://www.dslreports.com/forum/remark,26802155</link>
<description><![CDATA[Have had this set all of one day.  At times when changing channels it will lose sound.  Have had to revert to shutting down and restarting which provides a fix.

Curious whether this is most likely the TV itself or whether it may actually be a signal issue from my Cablevision supplied Scientific Atlanta DVR stb?]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,26802155</guid>
<pubDate>2012-01-23 07:02:46</pubDate>
</item>

<item>
<title>Need a meter for telephone work</title>
<link>http://www.dslreports.com/forum/remark,26845026</link>
<description><![CDATA[I have been hired to sevice a private telephone system on a 40+ acre campus. I have to supply my own tools so i need a VOM for testing telephone cables in buildings and from the buildings to the switchroom which is well over a mile away from some of the buildings. Ideas suggestions?]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,26845026</guid>
<pubDate>2012-02-02 13:15:35</pubDate>
</item>

<item>
<title>LCD TV Samsung LNS2652DX</title>
<link>http://www.dslreports.com/forum/remark,26544615</link>
<description><![CDATA[My tv suddenly doesn't display any image and when i check the backlight it doesn't light up anymore.

Is there anything that i should check or do to fix this TV or it's good for the garbage ?

Thanks]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,26544615</guid>
<pubDate>2011-11-13 11:06:55</pubDate>
</item>

<item>
<title>im a real dumb a__ sometimes !</title>
<link>http://www.dslreports.com/forum/remark,26816059</link>
<description><![CDATA[for 2 years ive had my Fluke 123 Scope Meter in the back of my car uncovered with a bunch of electronic junk on top of it, driving around, now its scratched up but not too bad and who knows what else may be wrong with it now (currently letting the humidity wear off from bringing it inside the house).
i totally forgot i owned this meter until i came across a post in another electronic discussion forum where someone spoke of the meter and then i *suddenly* realized.
can we please say DUMB A__ ?  :uhh:
edit:
im lucky, it still works fine, what a relief  ;)
--
Suffolk County NY Police Feed - http://www.scpdny.com
PS3 Gaming Feed - http://www.livestream.com/elitedata]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,26816059</guid>
<pubDate>2012-01-26 12:25:12</pubDate>
</item>

<item>
<title>External power supplies and ground</title>
<link>http://www.dslreports.com/forum/remark,26815380</link>
<description><![CDATA[Anyone ever look into this type of PS http://www.newegg.com/Product/Product.aspx?Item=N82E16816321024&nm_mc=OTC-Froogle&cm_mmc=OTC-Froogle-_-Server+-+Accessories-_-Habey-_-16321024 ??

The question is, is it like my HP laptop supply that has 1 meg from earth ground to supply ground?

I hate to base something on a sample of one :D]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,26815380</guid>
<pubDate>2012-01-26 09:49:11</pubDate>
</item>

<item>
<title>Electronics help with multiplexing</title>
<link>http://www.dslreports.com/forum/remark,26828791</link>
<description><![CDATA[I have an electronics question I hope someone can answer. I have a switch that could be loosely described as multiplexed. It is for the cruise control buttons for my car. I want to re-purpose these buttons for another use.

They are wired so that 12V comes to the switches, and when you press a button a different voltage comes out of a 2nd wire. Each switch has a unique resistance.

Is there an easy way to decode the output voltage, and convert that to 4 or 5 separate outputs? Ideally these outputs could run a relay or transistor to operate something like lights, nitrous solenoid, or similar things.]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,26828791</guid>
<pubDate>2012-01-29 20:48:14</pubDate>
</item>

<item>
<title>CCTV Help</title>
<link>http://www.dslreports.com/forum/remark,26830551</link>
<description><![CDATA[I have some CCTV equipment that I picked up online that I'm trying to get working.  Hopefully someone here can help, as the manuals and the place I bought the gear from aren't very helpful.

I have a Honeywell/Ademco HXCT16E multiplexer and both a samsung SSCDVR-80 and a samsung SRV960A time-lapse VCR.  I can't get the multiplexer to play nice with either of them... for one thing, I can't figure out the "field delay" field on the mux, and I don't have the breakout card for the mux, so I can't figure out which pin on the 50 pin connector the trigger pulse is supposed to be connected to. (I have a cable with bare wires that fits the connector, but the manual doesn't say what pin is what on the back of the mux, just on the card)

If someone has this equipment, can you help? (this is NOT mission critical work, it's just me screwing around, so if it doesn't work, it's not the end of the world...

TNX
--
Boone County Scanner Feed:
http://boone.mo.scanamerica.us/

"When the hammer drops, the bullshit stops"]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,26830551</guid>
<pubDate>2012-01-30 12:00:43</pubDate>
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