Recent content by LightFantastic

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    Is the term loop loosely defined in Faraday's law?

    Is the term "loop" loosely defined in Faraday's law? A voltage will be induced in a loop of wire when the magnetic field flux through the loop changes If you're reading this, you probably know what happens when you hook up the leads from an oscilloscope to a microphone. Nothing, lol. There...
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    Questions concerning mobile audio: Capacitor to filter tweeters

    https://www.parts-express.com/dayton-audio-nd25fn-4-1-neo-silk-dome-tweeter-element-4-ohm--275-053 https://www.parts-express.com/cat/capacitors/68 Tried replacing the OEM speakers in my vehicle with a set of aftermarkets ...without exchanging the OEM head unit. Terrible idea, and I...
  3. L

    What are these rocks worths? Pictures inside.

    Yes on the native copper. There are several boxes full of golf ball sized pieces in the basement, but the one in the picture is the largest specimen.
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    Can I Charge LG-VX11000 with LGLP-AHLM Battery?

    Thank you meBigGuy. I assumed a 9V 950mA rechargeable battery could be charged with a 9v 950mA DC battery.
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    What are these rocks worths? Pictures inside.

    Hi Evo Prices are all over the place on the bay. I'm browsing the mineral/rock forums. Couldn't resist posting here! I usually have a hard time mustering enthusiasm for art, but I can't help but to feel drawn to your avatar. Who is she?
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    Can I Charge LG-VX11000 with LGLP-AHLM Battery?

    Thank god Verizon allows you to sms over the web! The dilemma is resolved. Is there a reason why some wall warts have an AC output? This was on a rechargeable dust buster. I understand when you recharge a battery, you're not really putting electricity back in, rather returning the battery to...
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    Can I Charge LG-VX11000 with LGLP-AHLM Battery?

    Model NO: LG-VX11000 Battery model: LGLP-AHLM Battery states Lithium-Ion Polymer Battery 3.7V 950mA I do not have my charger.
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    What are these rocks worths? Pictures inside.

    I know a gentleman who wants to clear up his collection. 90% of these are handpicked, including the 150 lb amethyst in the last picture in post #3. Is there a market for this?
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    If I hook up an L.E.D. to a 9V, is the L.E.D. in series or parallel?

    I have logically deduced it in my head and it makes intuitive sense now. I am satisfied. I am, however, curious on the tube dilemma in my previous post.
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    If I hook up an L.E.D. to a 9V, is the L.E.D. in series or parallel?

    That's going in my notes. This is off topic, but is a simple question. There is a difference between varing DC and AC. In a triode vacuum tube, is the signal at the output of the tube varying DC or AC? I'm near positive it's varying DC. Heck, if the current really stopped, and went back in the...
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    If I hook up an L.E.D. to a 9V, is the L.E.D. in series or parallel?

    7=.01R R=700 Nowhere in that equation do I see 2V
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    If I hook up an L.E.D. to a 9V, is the L.E.D. in series or parallel?

    I do not see how I am solving for the voltage drop across the resistor, so the L.E.D. sees 2V. The resistor resists current. You reduce current, you reduce voltage, right? I get that. So from that 9V battery, the 700 ohm resistor is going to reduce current down to .01 amps after the resistor...
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