Ian Jackson wrote:
Try a Google on something like 'sinewave voltage current waveform' etc.
Just Googling Sine wave gave lots of examples.
Google is clearly a closely guarded secret. Lots of people in groups
that I subscribe to have clearly never heard of it. The odd thing is
that it must take them longer to type their question than it would take
them to find the answer.
--
Visit the Amazing Online Fleamarket at
http://www.fleamarket.org.uk
Always lots of amateur radio gear!