how do i configure an oscillator circuit,
to turn a source of DC electricity (9 volt battery?),
into AC electricity ?
if ever i needed a straight forward answer, it is on how to do this.
preferably step by step.
don't tell me to go to google.
google is 2 steps above useless, for things like this.
don't send me to a website with endless blah blah not-what-i-need.
each word that i read, tortures the nerves in my right brain matter.
just say it.
This is the circuit I used to generate a sinewave.
http://hobby_elec.piclist.com/e_ckt18.htm
Connect the output of this circuit to the load, and the other side of the load to ground.
I needed mo amps, so I build a bridge amplifier to boost the output...
You can look at the schematic and the bridge amplifier here...
http://www.overunity.com/index.php?action=tpmod;dl=item181
So why ya playing with AC now? Gonna catch a wave?
more like i'm going to kick a magnetic field in the teeth, with frequency.
*wink* *wink*
i also read that high frequency magnetic fields, make people feel better.
and even heal them of injury and disease.
Quote from: Loner on January 23, 2009, 03:39:47 PM
How clean a sine, or is square OK?
How much output?
Would a 555 timer do?
What Frequency Range?
Adjustable?
Stability? (Just for a couple hints....)
[ also, a good suggestion is quality vs component count, expense, etc.. ]
i doubt it matters if it is sine or square.
i doubt it matters how dirty the signal is, either.
if you showed a 30 volt output at half an amp, i could adjust that, to whatever i wanted.
the frequency doesn't have to be adjustable.
couldn't i avoid an IC chip, by connecting together a bunch of transistors?
the more transistors, the more oscillations, the higher the frequency?
i wanted to try 120 hertz,
180 hertz,
240 hertz,
300 hertz,
and 360 hertz.
any of those, would be fine.
stability doesn't matter much.
i can worry about stablity, after i get a prototype working.
minimum components,
at minimum cost,
are important.
i want it to be as simple/cheap as possible, while still working.
Quote from: nitinnun on January 23, 2009, 10:57:56 AM
how do i configure an oscillator circuit,
to turn a source of DC electricity (9 volt battery?),
into AC electricity ?
nitinnun
I have not made one yet but I have been planning a similar project .
I was going to make an oscillator using an LC resonant circuit driven by a PWM ( pulse width modulator )
I had links for how to make these things but lost them when I had to reformat my hard drive a month ago .
I remember that a datasheet on a 555 timer showed how to make a PWM and other devices with a 555chip
They say that a LC circuit will ring when hit with a pulse of energy .
I planned to hit it with a pulse from the PWM once each cycle .
The voltage used could be anything that a 555 chip can handle ......
gary
a transistor switches, whenever its trigger is struck.
so if you had 6 or more transistors connected into various chaotic patterns,
wouldn't their constant polarity-changing create different frequencies?
the more transistors you have,
the more switching going on,
the higher the frequency.
i'll try to implement the stuff above.
the 555 IC timer can only do up to 15 volts?
do they have larger IC's, which can handle bigger voltages/amperages?
could you show me a circuit, that does not rely on an IC chip ?
do they make transistors, that can handle a large amount of voltage and amperage ?
Quote from: nitinnun on January 23, 2009, 08:27:49 PM
i'll try to implement the stuff above.
the 555 IC timer can only do up to 15 volts?
do they have larger IC's, which can handle bigger voltages/amperages?
Nitinnun
back a few posts Loner posted a diagram of a driver circuit
If a driver circuit like this is driven by the output of your oscillator I think the only limits are the limits of the transistor you choose to use .
gary
See this here.
i used this 40 jears ago for
transfirmerless-power-voltage doublers.
i used this addes with an 3 transistor bootd-trap
amply tat follow tat loaded an cap.
this above 3 transitor circuit must varied wit Resistors and caps
to the wanted frequency.
ech of the R-C turn the signat 60 degrees.
so you can use this very easy also for motors enz.
Gustav pese
http://upload.wikimedia.org/wikipedia/de/3/37/Phasenschieber.png
on the kicker coils on your torroids.......
how much voltage and amperage do you use, to power the kicker coils ?
and what freuqency do you use on them ?
Quote from: nitinnun on January 23, 2009, 08:34:07 PM
could you show me a circuit, that does not rely on an IC chip ?
do they make transistors, that can handle a large amount of voltage and amperage ?
If you are looking at handling large voltage and amperage perhaps transistors are not the best way to go about it. In that respect, at least in my view, valves are far superior.
There are any number of oscillator circuits out there using valves, though today the acquisition of suitable valves might be difficult.
Transistors are in many ways more convenient but when it comes to handling power, valves, in spite of their inherent problems with heat, fragility etc, appear to be a much better option.
Hans von Lieven