Some additions to the theory of radio-frequency high-voltage supplies

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TypeTechnical Report
Series titleReport (National Research Council of Canada. Radio and Electrical Engineering Division : ERA); no. ERA-171
Physical description8 p.
SubjectCapacitance; Circuit optimization; Coils; Equivalent circuits; Impedance; Radio frequency; Radiofrequency integrated circuits; Rectifiers; Voltage-controlled oscillators
AbstractThe double-tuned overcoupled air transformer, commonly used in radio-frequency high-voltage supplies, is represented by an equivalent primary circuit. This circuit can be used very advantageously to develop the theory of operation of the oscillator, including the two possible operating frequencies, the necessary conditions for oscillation and maximum efficiency, and the variation of operating frequency and load resistance with primary tuning. It is shown that, at the operating frequency, the load impedance is purely resistive. The various resistances in the circuit representing the power losses and the load resistance are included in the equivalent circuit resistance, which appears as the plate load of the class-C oscillator tube. This greatly facilitates the design of a circuit to give any required power and voltage output. There are several ways in which this design problem can be approached, and the paper outlines the method which was used and found successful by the author.
Publication date
PublisherNational Research Council Canada
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AffiliationNational Research Council Canada
NoteFirst published in the Proceedings of the I.R.E. (Vol 37, No. 2)
Peer reviewedYes
NRC numberNRCC 1938
NPARC number21272325
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Record identifier26f8624b-e7de-4295-aa43-f05448bd6782
Record created2014-11-21
Record modified2017-04-12
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