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18th November 2011, 04:44 PM
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#1 |
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diyAudio Member
Join Date: Nov 2010
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Hifonics XX-Colossus-II power supply
I have a broken Hifonics XX-Colossus-II.
I noticed that the PWM of the power supply runs at an (audible) 16 KHz which cannot be correct. Does anyone know at what frequency it should run? Does anyone have schematics? Wout Ram |
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18th November 2011, 08:53 PM
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#2 |
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diyAudio Member
Join Date: Nov 2003
Location: Louisiana
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You can calculate the oscillator frequency (pin 5) with the values of the timing resistor and capacitor (connected to pins 5 and 6). The formula is in the datasheet for whatever IC they're using.
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