30 Nov
1999
30 Nov
'99
noon
On Tue, 30 Nov 1999, Arfon Gryffydd wrote:
Q2: What's the ring voltage (p-p) and frequency?
90Vpp? 10cyc?
In the U.S.A. for over 10 years (therefore on-topic? :-)
90 V at 20Hz
Many modern instruments are fairly tolerant and can handle other voltages
and frequencies.