I would suggest you try a 100uH inductor and as well as a 1000uF capacitor as an L/C filter. You may need 2 sets in series depending on how bad the noise is.
On 4/17/07, Doug Hutchison <[EMAIL PROTECTED]> wrote: > Have a system comprising 4m simplex link and 2m repeater running from > same PSU. > Tried using a brushless fan to boost cooling but when running and > connected on the same PSU as the RF kit, the noise generated on 4m TX > audio (not 2m), a very loud buzz, is incredible. Obviously the inverter > noise is being carried back into the PSU so some sort of filtering is > needed as, when the fan is run on a separate supply, there is no > problem. > > Has anyone encountered such a situation and if so what circuit or > device was used to cure the noise (other that a second PSU)? > > > Regards, > Doug - GM7SVK > > > > > > > Yahoo! Groups Links > > > >
