04780803 is referenced by 82 patents and cites 13 patents.

A high frequency generator is coupled to a resonant load. An inverter is swept through a range of frequencies at reduced power. The phase difference between the load current and voltage is measured. When the phase difference is at or near zero, the resonant frequency of the load is detected and the inverter provides full power to the load. The phase difference between the load current and voltage is monitored during operation so that the operating frequency of the inverter can be changed as the resonant frequency of the load changes.

Title
High frequency generator to be used in induction heating, laser, plasma and the alike
Application Number
6/922088
Publication Number
4780803
Application Date
October 22, 1986
Publication Date
October 25, 1988
Inventor
Enrique Juan Francisco Dede Garcia Santamaria
Valencia
ES
Agent
Ladas & Parry
Assignee
G H Industrial
ES
IPC
H02P 13/20
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