Help with cleaning of AC please

[pedja089]

That isn't 120Vac, it is 120Hz... And that is test circuit for Ripple Rejection test.

[Graham]

Hi
Thank you for pointing out the error. Although in defense of my mistake, the circuit does come under the heading of "Typical Applications' and is scarce on detail. But..... it does read 120Hz which I miss-read as 120volts, the US domestic outlet voltage, nominally! Sorry.