JPH0386419U

JPH0386419U -

Info

Publication number: JPH0386419U
Application number: JP14708289U
Authority: JP
Priority date: 1989-12-22
Filing date: 1989-12-22
Publication date: 1991-09-02

Description

[Brief explanation of the drawing]

第１図及び第２図は本考案の一実施例を示すも
ので、第１図は回路図、第２図は負荷回路及び制
御回路の具体回路図、第３図乃至第１０図は本考
案の他の実施例を示す回路図、第１１図及び第１
２図は従来例を示す回路図である。１１……交流電源、１２……第１の全波整流ダ
イオードブリツジ回路、１３……平滑コンデンサ
、１４……負荷回路、１５……第２の全波整流ダ
イオードブリツジ回路、１６，１７，５７……第
１のコンデンサ、１８，５９……第２のコンデン
サ、５１……シヨツトニー回路（半平滑回路）、
５８……第１のダイオード、６０……第２のダイ
オード。 Figures 1 and 2 show an embodiment of the present invention. Figure 1 is a circuit diagram, Figure 2 is a specific circuit diagram of the load circuit and control circuit, and Figures 3 to 10 are the embodiments of the present invention. Circuit diagrams showing other embodiments, FIGS. 11 and 1
FIG. 2 is a circuit diagram showing a conventional example. 11... AC power supply, 12... First full-wave rectifier diode bridge circuit, 13... Smoothing capacitor, 14... Load circuit, 15... Second full-wave rectifier diode bridge circuit, 16, 17, 57...first capacitor, 18,59...second capacitor, 51...shottney circuit (semi-smoothing circuit),
58...first diode, 60...second diode.

Claims

[Claims for Utility Model Registration] (1) An AC power supply, a smoothing circuit connected to the AC power supply via a rectifier circuit and supplying a relatively high DC voltage to a load circuit, and One of the AC input terminals is connected via one of a pair of first capacitors, and the other of the AC input terminals is connected to the other end of the AC power source via the other of the first capacitors. It is characterized by comprising a rectifying bridge circuit and a second capacitor connected between the rectifying output terminals of the full-wave rectifying bridge circuit, and outputting a relatively low DC voltage from both ends of the second capacitor. power supply. (2) An AC power supply, a semi-smoothing circuit connected to this AC power supply via a rectifier circuit and supplying a relatively high DC voltage containing a pulsating current component to the load circuit, and an output terminal of this semi-smoothing circuit. A second capacitor connected via the first capacitor and further via the first diode in the forward direction, and the first diode connected to the series circuit of the second capacitor and the first diode. a second diode connected in parallel with the opposite direction;
A power supply device characterized by outputting a relatively low DC voltage from both ends of a capacitor. (3) an AC power supply, a smoothing circuit connected to the AC power supply via a rectifier circuit and supplying a relatively high DC voltage to a load circuit, one end of the AC power supply and the negative terminal of the output terminal of the smoothing circuit; a second capacitor connected to the terminal via the first capacitor and further via the first diode in the forward direction; and a series circuit of the second capacitor and the first diode. A power supply device comprising a second diode connected in parallel in a direction opposite to that of the first diode, and outputting a relatively low DC voltage from both ends of the second capacitor.