.. . Public art project - noise ??
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Posts: 46,084
Hi all,
I assume you have been following this thread or you would not be
reading this.....
As I was thinking aobut the project of lighting 57 light bulbs of 100
watts each, (115VAC) it dawned on me that any type of pwm switching
would potentially cause the whistling associated with dimmed lights.
I have not looked into the method of dimming an AC light, but it
seems that if one were to use the voltage to dim, the frequency would
either be in an audiable range, or pass thru an audiable range.
That makes me think about either a very high speed pwm, or a current
control for the light.
It would seem the current control might offer slower switching
speeds ?
Any comments ?
Dave
I assume you have been following this thread or you would not be
reading this.....
As I was thinking aobut the project of lighting 57 light bulbs of 100
watts each, (115VAC) it dawned on me that any type of pwm switching
would potentially cause the whistling associated with dimmed lights.
I have not looked into the method of dimming an AC light, but it
seems that if one were to use the voltage to dim, the frequency would
either be in an audiable range, or pass thru an audiable range.
That makes me think about either a very high speed pwm, or a current
control for the light.
It would seem the current control might offer slower switching
speeds ?
Any comments ?
Dave