Greetings! Late last evening the Variac and my two RF Thermo Couple ammeters were given some tests based on the information received from this group. Success. The two meters in series across the Vari
Larry Again, at a mobile rally (hamfest) I bought a box of assorted ferrite and iron dust rings. There were about a hundred, various colours and sizes all for about a quid! My method of establishing
In addition to Tom's suggestion : In order to check the 'power behaviour' of a bunch of unknown toroids I took my old 136kHz TX (40W output), made a series circuit of a 1.5nF silver mica cap (actuall