| Aquarium Lights Problems |
I am troubleshooting my lights as they don't light and found that within the bulb area there are a set of parts that are unfamiliar with me. They are in series with the power line to each bu...
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| Magnetic field, in inches? |
Hi, Can I calculate the magnetic field around a wire in inches, I have voltage and current. Also, the magnetic field around a wire is cylindrical. Thanks, for helping. ...
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| remote control receiver 24volt transmits on 308MGz freq. do you know? |
My machine has a receiver from Shima Digital. It receives at 308 MGz. Will a transmitter at 310 MHz trigger it to go on and off?
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| lawn tractor switch |
I have a new John Deere lawn tractor. I like the tractor but it's got this annoying safety switch system that will not let you backup unless you disengage blade and further you cannot <...
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| A Basic MOSFET question |
Hello Everybody: Good morning. I have a couple of basic MOSFET questions that I would like to clarify. I have studied a lot of articles, asked a few people about this doubt but co...
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| What is the use of R2 in this oscillation circuit? |
I have electronics hobby and just start learning how oscillator works, like the loop gain must be >= 1 and the phase between the input and output should be 0 degree. The problem is, when ...
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| USB PC-Based Logic Analyzer |
I was looking at some PC-Based Logic Analyzers. I came across this one: http://www.pctestinstruments.com/ Has anybody of you used it before. My requirement is fairly simple...
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| DC transformer amps. |
Why does my 9v D.C. transformer only give a max. amps. of 0.22A?. I've looked inside it and it doesnt seen to have any resistor in series to restrict the current. A 6v. battery char...
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| cobbling together a ni-cad charger |
I have a cordless floor sweeper that's missing the wall wart power supply it came with. Inside the sweeper there is a 7.2 volt nicad pack with just a power resistor to limit current to the ...
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| SCD 70 Samsung Camcorder Menu Select problem |
Hi, i have a problem with my SCD70 camcorder: it was working very good, but one day the the track wheel to select menu stoped to work, so i hit the menu button and i see the menu, but ...
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| cobbling together a ni-cad charger |
I have a cordless floor sweeper that's missing the wall wart power supply it came with. Inside the sweeper there is a 7.2 volt nicad pack with just a power resistor to limit current to the ...
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| will shortening a soldering iron heating rod cause a problem? |
I need to shorten the end of my solder iron so i have more control of direction and make it more like a pen.....can i cut it down so my fingers are nearer the tip without causing a problem.....
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| Very basic question about placing an LED in a circuit |
Hello all. I have been loorking at this group for a while. I am an absolute beginner just now experimenting with hobby electronics on my own. I am building a simpl...
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| I'm in over my head, would someone kinly throw me a life ring? |
I don't know enough about electronics/electicity to know if I am in the correct place to seek some help, but if not, please pardon my intrusion. In the past, I have help clients locat...
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| Cancel magnetic field in one current carring wire |
Can anyone suggest the best way to shape a single wire carring a current so that it's magnetic field cancels itself out? Completely if possible. I'm trying to optimize the idea for light w...
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| More mechanical than Electrical Question... |
Hi - I want to mount a portable DVD player to the roof of the minivan so if anyone has experience dealing with a later model roof liner please lend me your thoughts - I'm thinking...
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| need help wiring an ac motor |
Can anyone help? I have a 1/4 hp ac motor that I am looking to make into a drum sander ex. http://www.pixelpuddle.com/sanders/ so the motor that I have has eight wir...
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| block diagram showin 74LS138 being used with Z80 |
i have i slight problem, and its got me stumpe i need to produce a block diagram for a simple mircoprocessor system showing how a 74LS138 logic device could be used as part of th addres...
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| Home wiring |
Hi Group, I am wiring a room in my basement. It is a new room. I have purchased 2 books on home wiring and I am confident about doing the work myself. I have 4 plug outlets, one l...
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| What's the best timer chip to pulse multiple pen laser like this http://www.onewithall.net/laser_pulse.gif TIA sal |
What's the best timer chip to pulse multiple pen laser like this http://www.onewithall.net/laser_pulse.gif Is it possible just to use one IC chip? If so anyone have an example ...
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| Home made Video - RF using old VCR Modulator |
I would like to build a device to connect a CCTV Camera to a TV using an old VCR Modulator, does anyone one have a svhematic of this - I remember seeing a circuit a few years back but can'...
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| Re: About 3-phase AC |
You are correct, if you connected your circuit in a three phase system you would not end up with 240 Volts, but with 208V instead. Here is a link to a nice site explaining 3-Phase AC ...
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| WTS: Used Nortel Passport 8006 6 Slot Chassis - DS1402002 |
------------------------------------- Network Liquidators is looking for buyers for our used Nortel DS1402002 Passport 8006 Chassis in stock and available immediately. We a...
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| where can I get sample 555 timer chips or something like them |
where can I get sample 555 timer chips or something like them? TIA
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| Frequency Measurement with a DMM |
I have a Radio Shack (actually Metex) DMM that measures frequency, among other things. When measuring the 60 Hz line frequency with this meter, it seems that several items in the ...
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| Copper tape? |
Need some thin copper tape (adhesive foil), about 1 or 1.5 inches wide, about 16 inches long. I'd be willing to buy a roll for this one-time use, but all I see is the 3M stuff ...
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| DC motor help |
I'd like for someone to explain how a two speed DC motor works. I have an idea but what I really want to know is how to increase it's speed if possible. Or what determines how fast the motor...
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| Can NiMH batteries be recharged using a normal AA charger? |
Wondering if I need to buy a NiMH charger for NiMH batteries or a normal AA charger will work with the NiMH batteries. Can anyone tell me if this is possible? Thanks in advance! <...
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| Digial Voltmeter DC and AC mode |
I dont understand the real meaning of DC and AC readings on the Digital voltmeter. Is it correct to say that if the signal = DC component + AC component then DC reading gives the DC componen...
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| Bury the hatchet John? |
OK, I think we both should have gotten it out of our systems by now. I was angry cuz you tried to embarrass me, but certainly not upset enough to make a permanent enemy here in SEB over suc...
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