JPH0186484U

JPH0186484U -

Info

Publication number: JPH0186484U
Application number: JP18218587U
Authority: JP
Priority date: 1987-11-30
Filing date: 1987-11-30
Publication date: 1989-06-08

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例の回路図、第２図は
第１図示の回路による発振状態の概略的な波形図
、第３図は従来回路の回路図、第４図はＥＬ素子
の等価回路の回路図、第５図は本出願人が本願と
同日付けで提案したインバータ回路の回路図、第
６図は第３図示の回路による発振状態の概略的な
波形図である。Ｒ_７，Ｒ_８，Ｒ_９……抵抗、Ｔｒ_４……発振用
ＮＰＮトランジスタ、Ｃ_２……コンデンサ、Ｔ_４……トランス、１……ＥＬ素子。 Fig. 1 is a circuit diagram of an embodiment of the present invention, Fig. 2 is a schematic waveform diagram of an oscillation state by the circuit shown in Fig. 1, Fig. 3 is a circuit diagram of a conventional circuit, and Fig. 4 is a diagram of an EL element. FIG. 5 is a circuit diagram of an equivalent circuit, and FIG. 5 is a circuit diagram of an inverter circuit proposed by the applicant on the same date as the present application. FIG. 6 is a schematic waveform diagram of an oscillation state by the circuit shown in FIG. R ₇ , R ₈ , R ₉ ... Resistor, Tr ₄ ... NPN transistor for oscillation, C ₂ ... Capacitor, T ₄ ...Transformer, 1...EL element.

Claims

[Claims for Utility Model Registration] In an inverter circuit that includes an oscillating transistor and a transformer and converts a DC input into an AC output with a frequency determined by the capacitive components of the first winding coil of the transformer and the load, a first resistor having one end connected to the collector of the transistor; a second resistor connected between the other end of the first resistor and the base of the transistor; and between the base and emitter of the transistor. a third resistor connected to the transformer; and a second winding coil of the transformer and a capacitor connected in series, the first resistor and the second
an inverter circuit comprising a feedback circuit connected between the connection point of the resistor and the emitter of the transistor.