http://forums.cabling-design.com/sci.electronics.basics-newsgroup43-.htm - for you, electronics enthusiasts! en-us Sat, 05 Jul 2008 06:08:17 -0400 info@cabling-design.com http://www.cabling-design.com/ http://blogs.law.harvard.edu/tech/rss/ http://forums.cabling-design.com/Minimising-current-in-unused-op-amp-article75797-43.htm Hi All, Having found dual op amp packages around a fifth the price of comparable single packages from online distributors, I think ill go for the dou...... The post has 5 replies so far. Read more and discuss here ... The post has 5 replies so far. Read more and discuss here ]]> Fri, 04 Jul 2008 04:20:49 -0400 http://forums.cabling-design.com/astable-multivibrator-issues--2N3904s-work-but-n-article75789-43.htm I built an astable multivibrator with blinking lights (much simpler than using a 556), as a test for a circuit that will use a power transistor (or MO...... The post has 7 replies so far. Read more and discuss here ... The post has 7 replies so far. Read more and discuss here ]]> Thu, 03 Jul 2008 18:25:13 -0400 http://forums.cabling-design.com/information-about-bridge-rectifier-article75779-43.htm hi thanks for ur kind informaation which u have given,but i want to know a small detail about bridge rectifier. DOES THIS BRIDGE RECTIFIER CAN BE CON...The post does not have any replies yet. Read more and discuss here The post does not have any replies yet. Read more and discuss here ]]> Thu, 03 Jul 2008 06:52:56 -0400 http://forums.cabling-design.com/Archive-Video-Format-standard-article75773-43.htm Preserving our visual History and Data needs a robust format that will be around for years into the future. After looking at all the options digital B...... The post has 1 replies so far. Read more and discuss here ... The post has 1 replies so far. Read more and discuss here ]]> Thu, 03 Jul 2008 00:25:06 -0400 http://forums.cabling-design.com/Re-Controlling-a-relay-via-cellular-phone-article75763-43.htm Another solution might be to just set up a windows timed event to reboot your remote machine on a daily basis at some obscure time of day or in the ve...The post does not have any replies yet. Read more and discuss here The post does not have any replies yet. Read more and discuss here ]]> Wed, 02 Jul 2008 22:27:53 -0400 http://forums.cabling-design.com/what-happened-to-the-H2SO4-article75758-43.htm Someone emailed me this answer to where did all the acid go to my battery question. Im reposting it here FYI: The Sulphuric acid (H2SO4) is a liqu...The post does not have any replies yet. Read more and discuss here The post does not have any replies yet. Read more and discuss here ]]> Wed, 02 Jul 2008 20:10:31 -0400 http://forums.cabling-design.com/My-NE2-Relaxation-Oscillator-is-Too-Relaxed--article75746-43.htm I am experimenting with a relaxation oscillator circuit consisting of a NE2 bulb wired parallel to a capacitor and this pair is wired in series with a...... The post has 13 replies so far. Read more and discuss here ... The post has 13 replies so far. Read more and discuss here ]]> Wed, 02 Jul 2008 16:49:49 -0400 http://forums.cabling-design.com/How-to-Make-Contact-Field-Optical-Microscope-article75742-43.htm How to Make Contact Field Optical Microscope http://www.youtube.com/watchvBB7OoYpeH6w The post does not have any replies yet. Read more and discuss here The post does not have any replies yet. Read more and discuss here ]]> Wed, 02 Jul 2008 14:04:24 -0400 http://forums.cabling-design.com/Animated-carton-demo-of-Contact-field-Optical-Micr-article75740-43.htm Animated carton demo of Contact field Optical Microscope http://www.youtube.com/watchvMFnt6UbwSJAampfeaturerelated Contactfield optical microscope is...The post does not have any replies yet. Read more and discuss here The post does not have any replies yet. Read more and discuss here ]]> Wed, 02 Jul 2008 14:00:03 -0400 http://forums.cabling-design.com/Cancer-Early-Warning-DeviceContactField-Optical--article75739-43.htm Cancer Early Warning DeviceContactField Optical Microscope http://www.youtube.com/watchvqkHeCQZ3iA4 Win the war against cancer is a long dream of ...The post does not have any replies yet. Read more and discuss here The post does not have any replies yet. Read more and discuss here ]]> Wed, 02 Jul 2008 13:54:06 -0400 http://forums.cabling-design.com/TO220-pinout-standard-article75734-43.htm Is it standard that a TO220 transistor package is, with the tab up, with the markings facing you, Base, Collector, Emitter (for example, on the TIP31...... The post has 11 replies so far. Read more and discuss here ... The post has 11 replies so far. Read more and discuss here ]]> Wed, 02 Jul 2008 12:50:39 -0400 http://forums.cabling-design.com/less-current-consuming-circuit-for-led-lamp-article75724-43.htm i am working on a project called less current consuming led lamp,and the major idea of this project is less consumtion of current and compact in size....... The post has 2 replies so far. Read more and discuss here ... The post has 2 replies so far. Read more and discuss here ]]> Wed, 02 Jul 2008 06:25:22 -0400 http://forums.cabling-design.com/LM1875-on-a-single-supply-article75696-43.htm I was reading the datasheet for the LM1875 http://www.national.com/ds.cgi/LM/LM1875.pdf and I noticed that they do have a schematic for a single supp...... The post has 10 replies so far. Read more and discuss here ... The post has 10 replies so far. Read more and discuss here ]]> Tue, 01 Jul 2008 14:30:48 -0400 http://forums.cabling-design.com/Simple-audio-signal-to-level-convertor-article75694-43.htm Hi, Im looking for a circuit that can read a standard line level audio signal and output a continous voltage 05v proportional to the amplitude of the...... The post has 11 replies so far. Read more and discuss here ... The post has 11 replies so far. Read more and discuss here ]]> Tue, 01 Jul 2008 13:15:55 -0400 http://forums.cabling-design.com/Dry-dead-battery-article75669-43.htm I was charging my battery over the weekend and checked it last night to find the battery dead as a doornail. Upon examination, the battery is complete...... The post has 21 replies so far. Read more and discuss here ... The post has 21 replies so far. Read more and discuss here ]]> Mon, 30 Jun 2008 17:01:56 -0400 http://forums.cabling-design.com/THanks-YOu-to-Tom-B-John-F-Bob-M-and-Peter-B-article75665-43.htm I wanted to take a minute to say THanks to: Tom Biasi John Fields Peter Bennet Bob Monsen for their positive input, ansswers, and suggestions as Ive...... The post has 4 replies so far. Read more and discuss here ... The post has 4 replies so far. Read more and discuss here ]]> Mon, 30 Jun 2008 15:57:49 -0400 http://forums.cabling-design.com/monitor-a-distributorless-ignition-system-article75658-43.htm I would like to data log commanded spark events for my vehicle. It uses a Distributorless Ignition System which consists of a engine control computer...... The post has 6 replies so far. Read more and discuss here ... The post has 6 replies so far. Read more and discuss here ]]> Mon, 30 Jun 2008 12:05:48 -0400 http://forums.cabling-design.com/Incandescent-Filiment-Support-Prongs-article75652-43.htm Are the filiment support prongs in an ordinary household incandescent light bulb made of Nickel metal or some type of Nickel alloy They look shiny li...... The post has 6 replies so far. Read more and discuss here ... The post has 6 replies so far. Read more and discuss here ]]> Mon, 30 Jun 2008 07:29:21 -0400 http://forums.cabling-design.com/Can-nichrome-be-soldered-article75639-43.htm Can nichrome be soldered to nichrome Can nichrome be soldered to copper insula ... The post has 3 replies so far. Read more and discuss here ... The post has 3 replies so far. Read more and discuss here ]]> Sun, 29 Jun 2008 21:19:55 -0400 http://forums.cabling-design.com/on-winding-a-transformer-article75631-43.htm Ive got a toroidal core, and Im planning on winding it with pulsed 12VDC on the primary, and want to get out 50V on the secondary, center tapped so I ...... The post has 11 replies so far. Read more and discuss here ... The post has 11 replies so far. Read more and discuss here ]]> Sun, 29 Jun 2008 16:29:19 -0400 http://forums.cabling-design.com/Question-about-pole-frequency-in-opamp-article75619-43.htm If i consider an opamp in correnttovoltage configuration with: ideal generetor current in inverting input non inverting input to ground feedback resis...... The post has 4 replies so far. Read more and discuss here ... The post has 4 replies so far. Read more and discuss here ]]> Sun, 29 Jun 2008 06:24:38 -0400 http://forums.cabling-design.com/CIE-article75609-43.htm Hello everyone, Has anyone on this forum taken a course from the quotCleveland Institute of Electronicsquot (CIE), and if so, what is your opinion o...... The post has 4 replies so far. Read more and discuss here ... The post has 4 replies so far. Read more and discuss here ]]> Sat, 28 Jun 2008 16:16:14 -0400 http://forums.cabling-design.com/rapidshare-links-search-in-google-article75603-43.htm www.coklazim.com The post does not have any replies yet. Read more and discuss here The post does not have any replies yet. Read more and discuss here ]]> Sat, 28 Jun 2008 09:00:17 -0400 http://forums.cabling-design.com/Musical-Fountains-article75602-43.htm Musical Fountains and Laser Shows by Emotion Media Factory Laserland http://www.ogogo123sina.cn/ The post does not have any replies yet. Read more and discuss here The post does not have any replies yet. Read more and discuss here ]]> Sat, 28 Jun 2008 08:10:46 -0400 http://forums.cabling-design.com/Japanese-halberd-Lima-Electronics-(Singapore)-Ltd-article75587-43.htm Japanese halberd Lima Electronics (Singapore) Ltd. Japanese halberd 1371410 2508 Japanese halberd MSN: szlima@hotmail.com Email: lima13714102508@21cn....The post does not have any replies yet. Read more and discuss here The post does not have any replies yet. Read more and discuss here ]]> Fri, 27 Jun 2008 18:59:35 -0400 http://forums.cabling-design.com/Sequencers-article75583-43.htm Have been googling around to find the little inverter/sequencers for blinking various strings of electroluminescent wire for an artsyfartsy project. W...... The post has 5 replies so far. Read more and discuss here ... The post has 5 replies so far. Read more and discuss here ]]> Fri, 27 Jun 2008 12:21:15 -0400 http://forums.cabling-design.com/Down-The-Tubes-article75578-43.htm I bought a bunch of vacuum tubes from a surplus electronics store that was going out of business, so many of them werent marked as to what tubes they...... The post has 16 replies so far. Read more and discuss here ... The post has 16 replies so far. 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Read more and discuss here ]]> Fri, 27 Jun 2008 07:08:04 -0400 http://forums.cabling-design.com/air-max-87-90-ltd-89-shoes-wwwshoestradebiz-article75574-43.htm please look our website ,have more mode shoes clothing hat cap bags Air Max Air Max 87 shoes www.shoestrade168.cn Air Max 90 shoes www.shoes...The post does not have any replies yet. Read more and discuss here The post does not have any replies yet. Read more and discuss here ]]> Fri, 27 Jun 2008 07:05:44 -0400 http://forums.cabling-design.com/switching-article75549-43.htm Hello everybody, I have a set of battery, but I only one hooked up to the circuit, The other one act as a backup. I want to implement an electronic u...... The post has 14 replies so far. Read more and discuss here ... The post has 14 replies so far. Read more and discuss here ]]> Thu, 26 Jun 2008 15:20:31 -0400 http://forums.cabling-design.com/Outdoor-Timer-for-Pond-article75536-43.htm I have an outdoor dawn/dusk timer for use outside. My main use has been for Christmas lights, but now I need something like it for a pond. Id like to...... The post has 3 replies so far. Read more and discuss here ... The post has 3 replies so far. Read more and discuss here ]]> Thu, 26 Jun 2008 10:58:42 -0400 http://forums.cabling-design.com/Hz-overload-article75535-43.htm Since the 9v battery supply is quickly used up, I am using a ac battery eliminator/wall wart to run the Led timer. Although the eliminator provides ...... The post has 6 replies so far. Read more and discuss here ... The post has 6 replies so far. Read more and discuss here ]]> Thu, 26 Jun 2008 10:38:35 -0400 http://forums.cabling-design.com/unknown-simbol-article75528-43.htm Is the joint contact on http://www.geocities.com/anglomont/hvrd.jpg connected to anode of 2x062h(it should be a diode) ... The post has 1 replies so far. Read more and discuss here ... The post has 1 replies so far. Read more and discuss here ]]> Thu, 26 Jun 2008 08:48:10 -0400 http://forums.cabling-design.com/Landscape-Contractors-article75527-43.htm Look for Toprated Landscape Contractors near you http://www.ogogo123sina.cn/ The post does not have any replies yet. Read more and discuss here The post does not have any replies yet. Read more and discuss here ]]> Thu, 26 Jun 2008 08:08:14 -0400 http://forums.cabling-design.com/Vacuum-Tube-6EJ7-Test-article75516-43.htm Hello again. Im still working on my tube testing project. I have been trying to determine the transconductance of the 6EJ7 tubes I have. Here is my...... The post has 4 replies so far. Read more and discuss here ... The post has 4 replies so far. Read more and discuss here ]]> Wed, 25 Jun 2008 22:24:52 -0400 http://forums.cabling-design.com/How-this-circuit-works-article75495-43.htm Hello I have the following questions, can anyone explain to me how the following circuit works, how does the first opamp oscillate, and how does the b...... The post has 15 replies so far. Read more and discuss here ... The post has 15 replies so far. Read more and discuss here ]]> Wed, 25 Jun 2008 09:20:43 -0400 http://forums.cabling-design.com/amplifiers-article75485-43.htm the output of an amplifier is a square wave when the input is a sine wave.what is the explanation for this ... The post has 6 replies so far. Read more and discuss here ... The post has 6 replies so far. Read more and discuss here ]]> Wed, 25 Jun 2008 03:15:35 -0400 http://forums.cabling-design.com/Switch-mode-power-supply-output-across-capacitor-i-article75483-43.htm Hi all, The subject describes pretty much my question. I have been spending several days trying to debug a circuit, only to find that it wasnt my fau...... The post has 3 replies so far. Read more and discuss here ... The post has 3 replies so far. Read more and discuss here ]]> Wed, 25 Jun 2008 02:41:26 -0400 http://forums.cabling-design.com/Sony-CMT-DH3-Music-System-article75460-43.htm Sony CMT DH3 Music System is is a HiFi Audio System with a double deck, 2 speakers and a surround sound system.It has Full Range Speakers with FM/AM t...The post does not have any replies yet. Read more and discuss here The post does not have any replies yet. Read more and discuss here ]]> Tue, 24 Jun 2008 04:36:12 -0400 http://forums.cabling-design.com/Nova-Coffee-MakerCoffee-Makers-article75459-43.htm Nova Coffee MakerCoffee Makers is Lid,Filter and Screen Assembly Are Made Of High Quality Making 6 to 8 Cups It Will Make A Perfect Addition To Your K...The post does not have any replies yet. Read more and discuss here The post does not have any replies yet. Read more and discuss here ]]> Tue, 24 Jun 2008 04:07:53 -0400 http://forums.cabling-design.com/LG-GL181PP-Refrigerators-article75458-43.htm LG GL181PP Refrigerators is 175 litres, 1 door refrigerator with a 35 litres freezer capacity has a semi automatic defrost system. It has 9 shelves an...The post does not have any replies yet. Read more and discuss here The post does not have any replies yet. Read more and discuss here ]]> Tue, 24 Jun 2008 03:39:09 -0400 http://forums.cabling-design.com/LG-LWA09C1AF1-Window-Ac-article75457-43.htm LG LWA09C1AF1 Window Ac is 0.75ton Air Conditioner with a rotary compressor has an energy efficiency ratio (EER) of 9 and has 3 fan speeds. It also ha...The post does not have any replies yet. Read more and discuss here The post does not have any replies yet. Read more and discuss here ]]> Tue, 24 Jun 2008 03:14:58 -0400 http://forums.cabling-design.com/Another-Novice-Q--recharging--Volts-and-Amps-article75431-43.htm Apologies in advance if this is a dopey question, but, when it comes to recharging batteries, and using a solar cell to do that, what Ive been assum...... The post has 19 replies so far. Read more and discuss here ... The post has 19 replies so far. Read more and discuss here ]]> Mon, 23 Jun 2008 14:13:35 -0400 http://forums.cabling-design.com/boost-circuit-article75410-43.htm Hi, I have a question concerning a boost circuit Vs a dc motor. here is a link to a boost circuit: www.intersil.com/engineeringtools/tools/buckandboo...... The post has 2 replies so far. Read more and discuss here ... The post has 2 replies so far. Read more and discuss here ]]> Mon, 23 Jun 2008 09:19:52 -0400 http://forums.cabling-design.com/LRC-omplex-Numbers-(Try-2)-article75407-43.htm When I used cut and paste from a word processor on the first post, I ddint realize that some of the information didnt move over correctly or was omitt...... The post has 12 replies so far. Read more and discuss here ... The post has 12 replies so far. Read more and discuss here ]]> Mon, 23 Jun 2008 08:45:35 -0400 http://forums.cabling-design.com/Questions-about-battery-leak-article75390-43.htm I have a handheld video game that takes 4 alkaline size C batteries, and I had left it in a corner 5 years ago and forgotten about it. I finally look...... The post has 3 replies so far. Read more and discuss here ... The post has 3 replies so far. Read more and discuss here ]]> Sun, 22 Jun 2008 22:50:59 -0400 http://forums.cabling-design.com/Is-Rigol-Good--article75339-43.htm Hello, Somebody recommended a Rigol mixed signal oscilloscope. I checked the Rigol website. Do you know anything about this company, these scopes ...... The post has 7 replies so far. Read more and discuss here ... The post has 7 replies so far. Read more and discuss here ]]> Sun, 22 Jun 2008 08:01:19 -0400 http://forums.cabling-design.com/which-PC-Based-Logic-Analyzer--article75338-43.htm Hello, At work we have an Intronix Logicport PC based logic analyzer. It is good, I like using it, but it has very little memory (2048 samples). C...... The post has 4 replies so far. Read more and discuss here ... The post has 4 replies so far. Read more and discuss here ]]> Sun, 22 Jun 2008 07:48:21 -0400 http://forums.cabling-design.com/Making-an-EMF-Detector-article75308-43.htm Hey everyone. I am in the final stages of making my EMF Detector but the schematic shows a 1mH inductor/probe for the device and it has been YEARS si...... The post has 1 replies so far. Read more and discuss here ... The post has 1 replies so far. Read more and discuss here ]]> Sat, 21 Jun 2008 20:40:41 -0400