| Thread | Last Post | Replies |
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| THE WORLD NEEDS COLD FUSION. | 23 Jul 2008 06:04 GMT | 7 |
We can make energy out of matter, and matter out of energy. With cold
fusion, we will unlock the power of the atom, and the world will have
infinite energy and be able to create matter out of energy and thus
infinite wealth.
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| Tube Radio Power Supply | 23 Jul 2008 05:58 GMT | 16 |
I have an old regen radio that requires 45 volts for the B+. I was
looking at plans for building a mains power supply, with a solid state
(1N4003) rectifier. Since the radio I'm building it for as tube bases,
(type 30) I thought of using a tube rectifier in place of the diode.
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| Substitution possible? | 22 Jul 2008 21:57 GMT | 2 |
Hi - newbie electronics learner here.
I'm building a basic 12/24V power supply and one of the components
called for is a 6A, 200 volt PIV bridge rectifier. I have one that is
6A, 250V. Shouldn't I be able to use this without problems?
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| Question about transimpedance amplifier | 22 Jul 2008 18:15 GMT | 1 |
As homework, i should design a transimpedance amplifier (with opamp)
for photodetector's front end. I haven't any specification about
photodiode's characteristics, so i haven't any information about
pratical uses of this system. I can choose arbitrarily any photodiode
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| Thermal jittering effects | 22 Jul 2008 18:13 GMT | 1 |
Hai
I donnot have any idea a bout how to reduce the thermal jittering
problems.Even i donnot know how it will effects from cool condition to
hot condition.Tell me the what r the steps we considered to reduce
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| Re-activating a Roof-top TV Antenna | 22 Jul 2008 17:08 GMT | 3 |
I would like to help a relative "re-activate" a roof-top TV antenna on a
single storey house in southern California.
From the ground, it looks to be physically in good shape, each of four
corners has 4 guy wires holding the mast, which looks to be something
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| _New Yorker_ Article Comparing Tech IP To Art IP | 22 Jul 2008 07:18 GMT | 4 |
Anyone see the recent _New Yorker_ article comparing tech IP where
personality isn't nearly the factor as in the arts?
Bret Cahill
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| about solar | 22 Jul 2008 01:57 GMT | 3 |
Hai
Can we generate 30W power using solar input
Thank u
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| On the Use of Crutch Words In Speech & Text | 21 Jul 2008 22:17 GMT | 4 |
> >> I think this could also be accomplished by stringing a grid of wires over
> >> the field, and using a trolley that rides on the wires.
> >That's certainly possible -- the "trolly tractor" was last summer's
> >idea -- but requires a lot of wire. It's actually cheaper to use a |
| Calculating DC Output Current From Unregulated AC Transformer | 21 Jul 2008 08:17 GMT | 89 |
I have an application in which I need to determine if a transformer is
suitable.
Transformer is rated for 12VAC, 1.67A but I need DC. I could put a
bridge rectifier and capacitor after it easily enough but how does one
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| If you are looking for a place to Buy and sell your used stuff and promote your small business..here is the place to go | 21 Jul 2008 01:26 GMT | 3 |
If you are looking for a place to Buy and sell your used stuff and
promote your small business..here is the place to go
I created a NEW forum where you can buy/sell/trade your used stuff and
for small
|
| Measuring Unloaded Q of Loop Antenna? | 20 Jul 2008 04:04 GMT | 7 |
What is the best way to measure unloaded Q of a tuned LC circuit (AM
loop Antenna) without a Q meter?
I tried a scope and generator and loosly coupled the generator to the
loop, using a single turn of wire and 50 ohm resistor, and monitored
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| EKG Electrodes | 19 Jul 2008 14:07 GMT | 2 |
I have a few EKG electrodes, the round things that are stuck on the
skin. I have some of both the kind that are used for a resting EKG, and
also the kind used for a stress (treadmill) EKG.
What are these things, electrically? They are soft rubber(?) discs that
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| Looking to modify this circuit for 30Hz operation | 19 Jul 2008 09:33 GMT | 7 |
I was given the parts to build this sine wave generator. As far as I
can tell it's a Wein Bridge with the two LEDs serving the function
originally reserved for the incandescent lamp.
http://www.stephenhobley.com/sinewave.gif
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| pcb layout | 19 Jul 2008 07:52 GMT | 15 |
Hai
I have a small doubt about PCB Layout
At turning point could we do route at 45 degree's , some one told in
PCB manufaturing the edge will cutout,we cannot see by eye's,we can
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