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http://ww.electronic-light.com/advan.html
I talked to the seller and he was gracious to even provide me with the schematic so we could work out the proper changes needed.
I am not failure with this 555 configuration, as it doesn't even use the normal output. I will have it up and running on a simulator later today.
Likely, R3 will need to be reduced to a minimum for stability, and a 1 meg pot add inbetween it, and Q1.
The 555 produces a triangle wave that is then compared for the central balance, where the pot R6 sets the balance point for square wave duration. The comparator outputs a square wave. It will be very simple to add a pot (and cap if needed) to very the frequency.
One setback is that it uses a diode D1 to absorb the "kickback" and it is this "kickback" that does the work in a Meyer-Dingle system. I am presently posting some circuit experiments that can teach anybody what is happening.
I do not personally have this circuit board, and won't be buying one, as I make my own boards and circuits. This is just for people who don't , and are looking for a cheap way to go.
I have been working on circuits that can reflect this energy back into the output circuit, instead of waste it defeating the dipole, while protecting the mosfet from blowing.
It's also very possible to gang two or three of these together with a separate controller, for intended desired results.
Look for Discovery Circuits in this form thread.
Thomas
Statistics: Posted by Lightwave — Thu Mar 22, 2007 11:46 am
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Did the parts arrive yet, or have you sorted this out? I haven't been on here for a couple of weeks, if you still need me to ring up Jaycar then that's no problem. Just let me know if you're still waiting on parts.
Statistics: Posted by nebbian — Mon Mar 12, 2007 6:17 pm
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yesterday at midnight I did a phonecall with Jaycar. From Germany to Australia it´s about 10 hours time different and it´s very expensive.
A friendly gentleman said that the commodity to me on 19 January would have been sent. Probably was the commodity lost in the case of transport, so I said please investigate where the commodity remained. I wrote and expect now already some emails and fax for an answer.
Please can you take a phonecall to Jaycar, here are the details of my order:
Order Date: 1/18/2007 6:46:39 PM
Order Number: JAU55775
Qty 3 STP60NE06/BUK456-60 N-channel FET, STOCK-CODE:ZT2450
and
Qty 3 Short Circuits Three Project - Waveform Generator, STOCK-CODE:KJ8110,
Grand total $ 91,90
This would be very nice if you can help me.
Sorry for my bad english.
Statistics: Posted by gross-umstaedter — Thu Mar 01, 2007 6:51 am
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As Thirsty posted before, Jaycar is a really respectable chain of electronics stores in Australia.
I rate them as the best I've ever been in, excellent service, low prices, no hassles. There's a store within 20km of my place, walking inside is like letting a kid into a candy store
Never had any problems with mail order either.
Do you know how to hook up FETs? Be careful with them, you can blow them up very easily if you don't get it right first go.
Statistics: Posted by nebbian — Thu Mar 01, 2007 6:35 am
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