| 摘要 |
<p>A high frequency welding apparatus for obtaining consistently high quality welds in metals, particularly those having low magnetic permeabilities and high thermal conductivities. The filament supply to the oscillator tube or tubes of the current generator has been changed from an A-C supply to a D-C supply having a low ripple or no ripple at all. The output stability of the current generator is thereby improved by decreasing the ripple on the output current to less than 6 percent.</p> |
