Recent content by wire2

>neither of those are right, also could you please explain a little. ok, I'm curious why but anyway, the sample is 33.16g, 1 cc = 19.32g so to divide will give the # of cc of the sample; >>Your sample is 33.16 ÷ 19.32 = 1.716356108 cc's >>1 cc = 1 000 000 sq cm at 1 µm thick yes, no...

Just so you know why, wattage is the product of volts times amperes. So a 1500 watt load designed for 110 volts will draw 13.64 amps, at 220 pulls 6.82 amps. As mentioned, the only difference is slightly more or less heating of the house wiring.

Your sample is 33.16 ÷ 19.32 = 1.716356108 cc's 1 cc = 1 000 000 sq cm at 1 µm thick so at 2.4 µm = 416666.6667 sq cm volume of cylinder is pi r² h so 3.1416 x .5 x .5 x h = 1,716,356.108 so h = 2185327.359 cm I think...

>As far as I am aware, there has never been any such thing as > a memory effect in regards to any battery chemistry. NiCads will resist taking a full charge if partially used and then recharged. It's accepted practice to fully discharge them each cycle. As I understand it, hydrogen bubbles...

It's written from experience. A defective tool or appliance can have exposed parts live. Simply holding one while standing on concrete with leather soled shoes will complete the circuit. Many people have felt an electrical shock this way at one time or other. An ungrounded power source, be it...

>THe resistance on the right (0.1/s) charges Did you mean "the reactance ... changes...? Also, there's no circuit link visible in your post .

Almost all motors and power transformers use a core of laminated steel to conduct magnetism. The iron molecules line up according to the direction of the magnetic lines, which is decided by the electrical polarity. There's a slight hesitation of the molecules to follow the (constantly reversing)...

>I realize that as we reduce the frequency of the emf, we're making the circuit "more and more DC"... You've basically answered your own question. The phenomenon of mutual induction (a.k.a. back EMF) between conductors in a transformer (or motor) winding is what limits the current. A very...

An optometrist friend explained this one to me. Humans (and most animals) see at about 30 fps because the brain processes the info coming in on the optic nerves at that rate. That makes old 8 mm 16 fps home movies flicker, yet the 30 fps scan rate of a TV seems like smooth motion. The brain does...

A stand alone generator (or alternator) with all leads isolated is considered a "floating" power supply. If the output voltage is 115 you can ground either one and fuse the other. If it's 230 volts, there should be a center tap (neutral) that can be grounded, then fuse the other 2 leads. The...

>You could not, as I have heard said, go up in a balloon and then wait while the Earth revolved under you! The balloon moves with the air which moves with the earth. You can under the right conditions. National Geographic magazine featured a story and pictures of a manned high altitude...

Just a thought; maybe I'm missing something but... Why not simplify the input signal circuit with the flasher output feeding through an adjustable resistor to a capacitor, connected to input pin 5? The resistor can be set to give a full scan within the flasher cycle. A second resistor to...

To start off I'll describe normal 3 phase AC motor operation. There's 3 sets of coils in the stator connected to 3 power lines. The 3 lines peak in voltage and current (I'll ignore power factor for this explanation) in sequence, creating a rotating magnetic field. For a 4 pole stator on 60...

It may or may not be the same thing, but there's a cordless, no battery electric fan designed to sit directly on a wood stove. It has an aluminum heat sink at the top to create a temperature difference across the active device. As the stove gets hotter the fan speeds up to blow the heat around...

Up to the '40's the iron laminations of rotors and stators of electric motors and generating equipment were poor quality and hysteresis losses were a major factor. (note how large old electric motors are compared to newer ones). Higher frequencies would have worsened the losses so up 'till then...