strahd_von_zarovich
Advanced Member level 4
Hi everybody,
I am looking for filter for my power supply input. Power supply is a 220VAC 50Hz to 24VDC converter. However, a very powerful noise nearly at 10kHz is coming from AC and this noise leaks into my analog circuits. Every circuit has its own low noise regulators, but still i can't get rid of 10kHz and it's harmonics. :-( . Probably it is coming from AC ground bacause when I plugged out , 10kHz and its harmonics are gone. However, when it is plugged in and power switch is off, they are still coming. How can i filter this noise, which components can i use for this purpose what are their names.
Thanks in advance.
I am looking for filter for my power supply input. Power supply is a 220VAC 50Hz to 24VDC converter. However, a very powerful noise nearly at 10kHz is coming from AC and this noise leaks into my analog circuits. Every circuit has its own low noise regulators, but still i can't get rid of 10kHz and it's harmonics. :-( . Probably it is coming from AC ground bacause when I plugged out , 10kHz and its harmonics are gone. However, when it is plugged in and power switch is off, they are still coming. How can i filter this noise, which components can i use for this purpose what are their names.
Thanks in advance.