MEan Voltage Too High On PWM Circuit.
hi folks,
i have bit of problem can't seem resolve. i'm using arduino pwm output switch fet circuit in order regulate power low resistance load. use frequency of 31khz because arduino available pwm frequency lower audible. problem @ these frequencies, mean voltage (and power) @ "out" far higher expected. duty cycle @ 1 analogwrite(10, 1); mean voltage see @ "out" @ vcc. had similar problems other components , concluded weren't switching fast enough, used components supposed able switch in mhz range, though 31khz no problem, problem still persists.
if use lower frequencies, indeed expected mean voltage @ out using lower frequencies makes loud hum , renders equipment designed hooked out useless.
if components supposed able switch @ these frequencies without issue, i'm @ loss explain what's happening. can shed light onto please?
vcc = 12v
i have bit of problem can't seem resolve. i'm using arduino pwm output switch fet circuit in order regulate power low resistance load. use frequency of 31khz because arduino available pwm frequency lower audible. problem @ these frequencies, mean voltage (and power) @ "out" far higher expected. duty cycle @ 1 analogwrite(10, 1); mean voltage see @ "out" @ vcc. had similar problems other components , concluded weren't switching fast enough, used components supposed able switch in mhz range, though 31khz no problem, problem still persists.
if use lower frequencies, indeed expected mean voltage @ out using lower frequencies makes loud hum , renders equipment designed hooked out useless.
if components supposed able switch @ these frequencies without issue, i'm @ loss explain what's happening. can shed light onto please?
vcc = 12v
i guess d3 being oriented way keeps out going low.
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