JPS5887492U

JPS5887492U - Current switching type D class oscillator

Info

Publication number: JPS5887492U
Application number: JP18188781U
Authority: JP
Inventors: 奥　啓一郎; 小菅　信吾
Original assignee: 富士電波工機株式会社
Priority date: 1981-12-07
Filing date: 1981-12-07
Publication date: 1983-06-14

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図及び第２図はそれぞれ従来の電流スイッチング形
り級発振器を示す回路構成図、第３図はこの考案に係る
電流スイッチング形り級発振器の一実施例を示す回路構
成図である。１１．１２・・・電源端子、１３・・・ダイオード、１
４・・・抵抗、１５・・・可変抵抗器、１６・・・トラ
ンジスタ、１７・・・定電流回路、１８・・・起動用高
抵抗、１９・・・抵抗、２０・・・入カドランス、２１
・・・第１の励振回路、２２・・・第２の励振回路、２
３．２４・・・トランジスタ、２５・・・コンデンサ、
２６・・・共振コイル、２７・・・同調回路、２８・・
・結合コンデンサ、２９・・・チョークコイル、３０・
・・負荷抵抗、３１ａ。３１ｂ・・・抵抗、３２ａ乃至３６ａ・・・ダイオード
、３２ｂ乃至３６ｂ−゛・・ダイオード、３７．３８・
・・ダイオード、３９．４０・・・抵抗、４１．４２川
電源端子、４３．４４・・・トランジスタ、４５．４６
・・・ダイオード、４７乃至５１・・・抵抗、５２・・
・可変抵抗器、５３・・・高周波チョークコイル。FIGS. 1 and 2 are circuit diagrams showing a conventional current switching class oscillator, respectively, and FIG. 3 is a circuit diagram showing an embodiment of the current switching class oscillator according to the present invention. 11.12... Power supply terminal, 13... Diode, 1
4... Resistor, 15... Variable resistor, 16... Transistor, 17... Constant current circuit, 18... High resistance for starting, 19... Resistor, 20... Input transformer, 21
...First excitation circuit, 22...Second excitation circuit, 2
3.24...transistor, 25...capacitor,
26... Resonance coil, 27... Tuning circuit, 28...
・Coupling capacitor, 29...Choke coil, 30・
...Load resistance, 31a. 31b...Resistor, 32a to 36a...Diode, 32b to 36b-゛...Diode, 37.38.
...Diode, 39.40...Resistor, 41.42 River power supply terminal, 43.44...Transistor, 45.46
...Diode, 47 to 51...Resistance, 52...
・Variable resistor, 53...High frequency choke coil.

Claims

[Scope of utility model registration request]

A DC power supply, a current switching type class amplifier whose switching elements are a pair of transistors connected in parallel to the DC power supply via an inductance element, and a load connected in parallel to the output terminal of the D class amplifier. A tuned circuit consisting of a capacitor and a resonant coil, a feedback circuit that positively feeds back the voltage across the tuned circuit to the primary side of the input quadrature via a coupling capacitor, and an excitation circuit that alternately supplies a DC input supplied to the secondary side of the input cadence to the base of each of the transistors, and the DC input supplied to the secondary side of the input cadence is supplied from a power source separate from the DC power supply. In the power switching type class oscillator thus obtained, a choke coil is inserted and connected between the secondary side of the input cadence and the power source to prevent alternating current components from going around to the power source side. Characteristic current switching class oscillator.