Let's just say that if you get it to work reliably, you'll no longer be anything near a noob at all! There's alot to know about power switching with mosfets and many pitfalls.
I've read somewhere online where someone stated there's only a few ways in which a mosfet can fail, and a few dozen in which they can occure.
I'm uncertain as to the nature of the circuit you're discussing at this point because I have to say I've not been following it very closely, however if you're talking about a flyback coil maybe I can assume that you'd be chopping it with a power switch on the low side of it, that would be reasonably easy I think compared to the usual half bridge or pushpull where timing is critical.
At least it greatly simplifies the gate drive circuitry.
Don't rule it out immediatly but go into it knowingly, there's alot of good app notes around that can help you out and give you a few ideas as to what you're in for.
I've read somewhere online where someone stated there's only a few ways in which a mosfet can fail, and a few dozen in which they can occure.
I'm uncertain as to the nature of the circuit you're discussing at this point because I have to say I've not been following it very closely, however if you're talking about a flyback coil maybe I can assume that you'd be chopping it with a power switch on the low side of it, that would be reasonably easy I think compared to the usual half bridge or pushpull where timing is critical.
At least it greatly simplifies the gate drive circuitry.
Don't rule it out immediatly but go into it knowingly, there's alot of good app notes around that can help you out and give you a few ideas as to what you're in for.
How about a max9709 from maxim with a tv transformer, but instead of using the full H-bridge, the transformer is connected to one output and gnd, creating a single ended drive and preventing the transformer from saturating.
That IC looks cool, but I just realised I'm not entirely sure what doing PWM onto a transformer will achieve - you're just putting the same signal onto the primary, but with some high frequency artefacts. I get the feeling I'm missing something, are you supposed to put PWM on the primary but as a single ended signal and rectify the output of the secondary, a bit like how an AM radio works?
Ok yeah basically you can use PWM but you have to rectify it and the max voltage is a square wave and lower is shorter pulses (Also, the design I posted above is inefficient and pointless) (thanks to el`Ol for this info in the other thread 😀)
You can't just apply a pwm signal to a tv transformer, the audio frequencies will probably saturate the core or at least heavily load the amplifier.
If you apply only half the pwm signal to the transformer and let the transformer get rid of it's energy during the other half then saturation won't happen, if I'm correct.
Bigwill your schematic is actually amplitude modulation but will probably also work.
If you apply only half the pwm signal to the transformer and let the transformer get rid of it's energy during the other half then saturation won't happen, if I'm correct.
Bigwill your schematic is actually amplitude modulation but will probably also work.
That depends on the bandwidth, you still need a decent high voltage dc supply though.
I wonder how much we could get from a speaker like this, would it go as low as 100 hertz pherhaps?
I wonder how much we could get from a speaker like this, would it go as low as 100 hertz pherhaps?
Even just getting down to 500Hz would be pretty good IMO, normal dynamic drivers would be fine for below that range, but the lower the biefield brown speaker goes the better!
The Lifter Vehicle...
I'm not really here 😀
Anyhow, if the lifter has a stable 'lift' (= standing still, hovering), this means
that it transmits DC.
If the lifter has a variable lift at 15 Hz (rising and lowering itself 15 times
every second), this means that the lifter transmits 15 Hz.
The first has already been realized, for example by the Maximus II, so there
is a great potential here for a Biefeld-Brown effect based transducer to be full
range, some day, eventually
I'm not really here 😀
Anyhow, if the lifter has a stable 'lift' (= standing still, hovering), this means
that it transmits DC.
If the lifter has a variable lift at 15 Hz (rising and lowering itself 15 times
every second), this means that the lifter transmits 15 Hz.
The first has already been realized, for example by the Maximus II, so there
is a great potential here for a Biefeld-Brown effect based transducer to be full
range, some day, eventually
Nixie said:
And I was hoping we at last were discussing the PWM-sync source here 🙄
(IMO if we know the resonant frequency of the [telsa-] coil, no tap (from the HV-terminal of the coil) for this signal is needed (as is done in most preceding plasma tweeter driver designs), that it instead can be locked/fixed, generated externally.)
*kick*
I have a question, if the spacing between the big and small elektrode is made very small, would the same effect be achieved with a lower voltage?
If so, one could make the spacing very small, something like 1,5 mm, and use a voltage source of 1 kV or so.
I have a question, if the spacing between the big and small elektrode is made very small, would the same effect be achieved with a lower voltage?
If so, one could make the spacing very small, something like 1,5 mm, and use a voltage source of 1 kV or so.
You'd have less SPL, unless you made a larger driver, which increases directionality.bobo1on1 said:
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