Some members are "against" regulators like that because they waste power.
In a 7805 style regulator, the input current is always the same as the output current, so since it's at a higher voltage, the difference in input - output voltage, times the current, is the wasted power in watts.
That waste manifests as heat.....
Thank you JimboZA. Would you agree that it is a power problem and not a noise problem ? Do you have a alternate recommendation from the 7805 regulator?
Thanks again for your assistance.