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Design for a 25 MHz oscillator/inverter that can operate at 110 volts.? Answered

Can anyone help me find a design for or creating a design for a 25 MHz oscillator/inverter... I also could use a design for or a compact inverter that can have the same voltage rating but bring the frequency of a dc current to 60 Hz.

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rickharris (author)2011-04-10

You will also almost certainly be breaking the law. As frequency allocation is very closely regulated in most countries.

Not to mention the possibility of upsetting a lot of people around you with the high powered Rf field.

This can be done, if there weren't issues we would all be using it for something (other than charging my tooth brush)

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rickharris (author)rickharris2011-07-07

Has this question changed - It looks like several of us have either had a crystal ball moment or answered a different question?

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user

In the past you needed a broad casting licence to use a walkie-talkie over a certain power, this has changed. Today you only need a licence for commercial use, so as long as you do not bother your neighbours or profit from what you are doing, it is legal.
A microwave oven works at 24MHZ and 24MHZ is allocated for microwave ovens, if you were to monitor 24MHZ any where in Ontario the Rf detector would go nuts from the millions of microwave ovens in use.

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Josehf Murchison (author)2011-07-01

I would build a microwave cannon from an old microwave and aim it at a receiver coil. Store the charge in large capacity capacitors before inverting to AC 60 cycle.
Depending on how picky your equipment you want to power you may need a pure sine wave inverter or a Modified sine wave inverter rather than a square wave inverter.
You should check out my Modified Sine Wave Signal Generator.
It shows the basic circuit for power boosting as well as it shows how to build the signal circuit.

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iceng (author)Josehf Murchison2011-07-04

Look into the cannon and all it takes to make it scatter.

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Josehf Murchison (author)iceng2011-07-05

I light florescent lights with mine from quite a distance.

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iceng (author)Josehf Murchison2011-07-05

And the FCC never comes to see you ?

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lemonie (author)2011-04-09


What is wrong with you people?
You say "25 MHz oscillator/inverter" - what do you want - an oscillator or a power-inverter?
You say "the same voltage rating" without mentioning voltage anywhere else, what voltage?
What are you talking about? (I'm not guessing on this one)

L

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amelius (author)lemonie2011-04-09

OOPS, forgot to mention, 100 volts... and i need a power inverter most likely due to the fact that I need high power and voltage in this scenario.

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lemonie (author)amelius2011-04-09


OK, so you want a 100VAC 60Hz supply, which supplies I don't know how much power, and runs off I don't know what...
What is the whole thing you want to do here? It's too vague, if you have a VAC, A & Hz spec' you might find an answer which is what you need.

L

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amelius (author)lemonie2011-04-09

Ok whole plan:
1: Change 110VAC at 60 Hz to 25 MHz
2: Input frequency into a coil which is inductively coupled at 25MHz with a second coil some distance away. (In tests i used a function generator, but I want to build a more compact system which can actually be used for powering a device)
3: Second coupled coil receives something slightly less than 110V (sine wave).
4: Sine wave is rectified and sent into a second inverter to return it back to 60Hz as all electronics run on that.
5: Goes into device and powers it.

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lemonie (author)amelius2011-04-09


OK, now we know. You'll concede that you could have put this into the original question?

How much power do you want to transmit, and how far?
I find Sony have achieved 60W over half a metre, but I think that's a lot less than you would want. The pdf is claiming 80% actual transmission power, which ain't that good for "arm's length".
Can be done, but do you think your requirements are close to Sony's or way above that?

L

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jeff-o (author)amelius2011-04-09

Aha, so you want wireless power transmission.

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iceng (author)2011-04-09

Good idea, have a look at the works of Nikola Tesla something may resonate..
Ambient conditions may not guarantee 110V at the receiver.
Your second converter will easily use technology to handle input variations.
When you succeed, hire some body guards, the established telephone pole manufacturers may put a hit on you.

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steveastrouk (author)2011-04-09

Still not enough infomation.
How much power ?
25Mhz is a handy radio frequency, and you can broadcast it very effectively.

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