- Posted by alf on Monday 11 July 2011 - 20:09:15
You'd modulate the power input. To modulate it you have to modulate the voltage, how you do this is up to you. It could be a simple transistor burn...
- Posted by alf on Monday 11 July 2011 - 20:09:15
you could use the input inductor to modulate input by making a transformer out of it and feed the primary with an audio amplifier (or do the same with...
- Posted by alf on Monday 11 July 2011 - 20:09:15
You can use the input inductor as part of a buck converter. You only need one added power mosfet and a power diode. Its a commonly used configuration ...
- Posted by alf on Monday 11 July 2011 - 20:09:15
This will not work well, the series inductor will act as a low pass filter cutting the treble. And if you try to interrupt the supply current too fast...
- Posted by alf on Monday 11 July 2011 - 20:09:15
In the diagram, there is a reversed diode but still, it would cut the treble of the sound because it takes a while for it to start oscillating and als...
- Posted by alf on Monday 11 July 2011 - 20:09:15
CCFL inverters switch the mosfet as part of a buck converter a bit below the royer oscilator opperating frequency (usually above human hearing). The c...
- Posted by Franky on Sunday 26 June 2011 - 10:13:16
Looks conceptually sound, but you may also want to place a film capacitor in series with the flyback primary like you did with the gdt. You can also ...
- Posted by Franky on Sunday 26 June 2011 - 10:13:16
The capacitor softens the load for the mosfets. Instead of a direct off to direct on, like a square wave, the capacitor "rounds the corners" for lack ...
- Posted by Franky on Sunday 26 June 2011 - 10:13:16
In the best case, the capacitor and leakage inductance of the flyback resonate at the frequency of the driver, soft-switching happens, and the MOSFETs...
- Posted by Franky on Sunday 26 June 2011 - 10:13:16
Actually the capacitor is there to assure no net DC current passes trough the transformer.
If that happens the transformer will saturate and it w...
