- Posted by teslacoolguy on Wednesday 06 February 2008 - 01:56:16
15V supply is fine.
Teslacoolguy, I think you get it wrong- the way it should work is that the input audio should MODULATE the pulse width. You will...
- Posted by teslacoolguy on Wednesday 06 February 2008 - 01:56:16
no i do not get any output from the pwm chip and now it gets warm with no input on the audio so i am starting to think it is a mistake i made on my pa...
- Posted by teslacoolguy on Wednesday 06 February 2008 - 01:56:16
i was bored so i carefully went over the everything one more time and found a critical error with one of the resistors so if i get time i will fix it ...
- Posted by teslacoolguy on Wednesday 06 February 2008 - 01:56:16
as my first audio modulated high voltage device i decided to build http://www.youtube.com/watch?v=Sg-9snu8kf0 schematic http://www.volny.cz/jmartis/fl...
- Posted by Dr. Dark Current on Monday 10 September 2007 - 17:23:26
A single MOSFET in series with the centre-tap supply works well. Make sure you play around with the bias plenty -- you'll need to float it juuust unde...
- Posted by Dr. Dark Current on Monday 10 September 2007 - 17:23:26
i have managed to get quite good results by using a 555 driver and placing the audio signal via a 10nf capacitor to pin 5 of the 555.
- Posted by Dr. Dark Current on Monday 10 September 2007 - 17:23:26
Also, in my opinion, making sound from a flyback arc will never really sound "good" partially because the carrier frequency is only ~2x the highest...
- Posted by Dr. Dark Current on Monday 10 September 2007 - 17:23:26
hmm, I thought that if you sample audio at x hz, you can reproduce all frequencies all the way up to x/2, so setting the freq. to 40kHz should be plen...
- Posted by Dr. Dark Current on Monday 10 September 2007 - 17:23:26
I tried the half-bridge with dead time modulation, I dont know why but the sound was absolutely unlistenable. I'm probably going with linear modulatio...
- Posted by Dr. Dark Current on Monday 10 September 2007 - 17:23:26
wow :¬) It's very impressive, I'm glad I found you.
What is the frequency response like on it?
