JPS6355789U

JPS6355789U -

Info

Publication number: JPS6355789U
Application number: JP14877586U
Authority: JP
Priority date: 1986-09-30
Filing date: 1986-09-30
Publication date: 1988-04-14

Description

[Brief explanation of drawings]

第１図は本考案の一実施例に係る高圧電源装置
の回路構成図、第２および３図はそれぞれ従来の
高圧電源装置の概略の回路構成図である。１，２：コンバータ、５：スイツチ回路、６，
７：抵抗、（逆極性電流バイパス用）、８：電流
検出回路、８１，８２：負荷電流検出抵抗、８３
，８４，８５：ダイオード、Ｘ：高圧出力端子、
ａ，ｂ，ｃ，ｄ：コンバータの出力端子、Ｅ：接
地端子。 FIG. 1 is a circuit configuration diagram of a high-voltage power supply device according to an embodiment of the present invention, and FIGS. 2 and 3 are schematic circuit diagrams of conventional high-voltage power supply devices, respectively. 1, 2: converter, 5: switch circuit, 6,
7: Resistor, (for reverse polarity current bypass), 8: Current detection circuit, 81, 82: Load current detection resistor, 83
, 84, 85: diode, X: high voltage output terminal,
a, b, c, d: converter output terminal, E: ground terminal.

Claims

[Claims for Utility Model Registration] A first DC-DC converter that generates a first high-voltage DC output between first and second terminals;
and a first resistor connected between the second terminals;
A second high voltage DC output that generates a second high voltage DC output of opposite polarity to the first high voltage DC output between the second and third terminals.
a DC-DC converter, a second resistor connected between the second and third terminals, and a second resistor connected in series between the third terminal and the ground terminal through the first terminal and the ground terminal. A current detection circuit that detects a flowing load current and feeds back this detection signal to the first and second DC-DC converters, and selectively operates the first and second DC-DC converters. A high voltage power supply device comprising a switch circuit and selectively generating positive and negative constant current high voltage direct current outputs between the first terminal and the ground terminal, wherein the current detection circuit is connected to one end of the high voltage power supply device. a third resistor whose other end is connected to the ground terminal and the negative feedback signal input terminal of the first DC-DC converter, and between the other end of the third resistor and the third terminal. a first diode connected in a forward direction with respect to the load current during operation of the first DC-DC converter; one end connected to the ground terminal and the other end connected to the second DC-DC converter;
A fourth resistor connected to the negative feedback signal input terminal of the converter, and the load current flowing between the other end of the fourth resistor and the third terminal during operation of the second DC-DC converter. a second diode connected in the forward direction to the resistor, and further in series with at least one of the third and fourth resistors in the same direction as the first or second diode connected to the other end of the resistor. A high-voltage power supply device comprising: a third diode inserted therein.