Abstract
High-frequency high-power oscillation can be generated by a two-terminal and feedback oscillator. In the former, the negative resistance portion is separated from the frequency determining part so these can use a solid-state negative resistance switching device. However, the power output capability is limited in single-stage operation. Using an inductor-switched SCR device, an arc can be established and maintained by astable mode of operation actuating itself as negative resistance for the two-terminal oscillator. With proper selection of circuit parameters, arc geometry, and core material, an efficient sinusoid can be generated and power amplification stages can be avoided as well as circuit Q adjustment for good waveform at the cost of output power.
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