JPS58152031U - oscillation circuit - Google Patents

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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案の一実施例回路図、第２図は第１図構成
の各部波形図を示す。 図中、Ｖｃｃ・・・電源電位、ＣＤ・・・電流検出抵抗
、ＳＷ・・・スイッチ手段、ＴＲ・・・トランス、ＣＯ
Ｍ・・・電圧比較器、Ｃ・・・コンデンサ、Ｒ・・・抵
抗。FIG. 1 is a circuit diagram of an embodiment of the present invention, and FIG. 2 is a waveform diagram of each part of the configuration shown in FIG. In the figure, Vcc...power supply potential, CD...current detection resistor, SW...switch means, TR...transformer, CO
M...voltage comparator, C...capacitor, R...resistance.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] トランスの一次巻線と電源との間にスイッチ手段を設け
、該スイッチ手段を断続制御して該トランスの二次巻線
より発振出力を得る発振回路において、該トランスの一
次巻線に接続される電流検出用抵抗と、一方の入力端に
該電流検出用抵抗により検出した検出電圧が接続され、
他方の入力端に基準電圧が接続された電圧比較器と、該
電圧比較器の出力と一方の入力端間に設けられる微分回
路とを備え、該電圧比較器の出力に基いて該スイッチ手
段を断続制御することを特徴とする発振回路。In an oscillation circuit, a switch means is provided between the primary winding of the transformer and a power source, and the switch means is controlled intermittently to obtain an oscillation output from the secondary winding of the transformer, which is connected to the primary winding of the transformer. A current detection resistor and a detection voltage detected by the current detection resistor are connected to one input terminal,
A voltage comparator having a reference voltage connected to the other input terminal, and a differentiating circuit provided between the output of the voltage comparator and one input terminal, and controlling the switching means based on the output of the voltage comparator. An oscillation circuit characterized by intermittent control.