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Well, despite first negative results I now seems to
get some positive results.........
Thanks to all here for the "physical support"
, it keeps me involved.........
For Mal, and others,...I just first want to get my
costs as low as possible by using
things I have in my junkbox.
I soon expect to get a number of old (defect)
SMPS-computer power supplies, which
at least contains an T106-26 core as well as an
larger transformer.
Not sure about the FET's in these supplies, but
when having several in my junkbox
it will be not a big problem when loosing some of
them.
Meanwhile I also dismanteld some old computer
monitors, which seem to be a nice
source for various components too. (some
high-voltage/low loss capacitors. as well!!)
Meanwhile I ad an 7805 regulator to my circuit;
lowering the ouput level to +7dBm.
I'm keying the 4060 on pin 12 , and that seems to
work well.
Next will be the TDA2030 amp. Rich, OM2TW advised
an high permeability core in
the step up transformer >2000.
I will test some core's......got a grey one, might
be an 3C90 or what ever, no idea.
I just give it a try............
I am luck to have some nice transformers available;
one of them is a 42V/20A device...........
With the start on LF, a lot of 'related to' work
has to be done, like constructing special
measuring equipement, power supply, dummy load
etc.
I do have a quite large and various amount of PVC
pipe's (left-overs!) some of them being
20-30cm in diameter.....great stuff for large
coils!
Well, now I'm returning to the soldering iron, and
hopefully will rise my power above 1 Watt (hihi)
73
Dick pa4vhf (now
QRppppppppppp on 137kHz in a 50 Ohm resistor..........)
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