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Registered Member #1875
Joined: Sun Dec 21 2008, 06:36PM
Location:
Posts: 635
If the frequency to time conversion question pertained to the diode's reverse recovery and such, you'll need a reverse recovery that is a good bit faster than 2.5 uS, since that is the time it takes for an entire cycle to complete, rather than just change polarity. Those 75 nS ones, or ultra-fast as they are called, should do the trick.
Registered Member #30
Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
The dimensionless "seconds" referred to in that link are seconds of arc, a measurement of angle.
The seconds you get on your watch aren't dimensionless, they have a dimension of, believe it or not, time. Hence, frequency isn't dimensionless either, it has a dimension of 1/T.
I think that's what radiotech meant by a "trap". Frequency is the rate of change of phase angle, so angle divided by time. Angle is the dimensionless thing.
Registered Member #2463
Joined: Wed Nov 11 2009, 03:49AM
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The 'trap' question was along these lines:
Two transmitters are sending a signal to a city 40 miles away. The first operates at 200 Khz and the second at 500 kHz. Which signal arrives first at the city and what time period passes before the second arrives?
do you have a ultra fast diode in mind? one that can handle the high wattage of a tesla coil reciving system.
Do you think this will make a good science project? my question is, is wireless energy using tesla coils caused only by magnetic fields? I know the answer, no, but it will look good to my teacher!!!!
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dumb question
