JPH0478601U

JPH0478601U -

Info

Publication number: JPH0478601U
Application number: JP11889490U
Authority: JP
Priority date: 1990-11-15
Filing date: 1990-11-15
Publication date: 1992-07-09

Description

[Brief explanation of the drawing]

第１図は本考案に係る調節計の一実施例の要部
を示す回路図、第２図は第１図中の電力消費回路
の他の例を示す回路図、第３図は本考案の他の実
施例の要部を示す回路図、第４図は第３図の実施
例の動作を説明するタイムチヤート、第５図は従
来の調節計の要部を示す回路図である。１……制御回路、３……出力回路（リレー）、
５……電源ライン、７……本体パネル、９，２５
……計器端子、１１，１７……出力ライン（操作
量出力ライン）、１３，１５……電力消費回路、
１９……バツフア、２１……出力回路（電流変換
回路）、２３……フイルタ、Ｌ……コイル、Ｒ１
，Ｒ２，Ｒ４……抵抗、Ｒ３……負荷抵抗、Ｑ１
〜Ｑ３……トランジスタ。 Fig. 1 is a circuit diagram showing the main parts of one embodiment of the controller according to the present invention, Fig. 2 is a circuit diagram showing another example of the power consumption circuit in Fig. 1, and Fig. 3 is a circuit diagram showing the main part of an embodiment of the controller according to the present invention. FIG. 4 is a circuit diagram showing the main parts of another embodiment, FIG. 4 is a time chart explaining the operation of the embodiment of FIG. 3, and FIG. 5 is a circuit diagram showing the main parts of a conventional controller. 1...Control circuit, 3...Output circuit (relay),
5...Power line, 7...Main panel, 9,25
...Instrument terminal, 11, 17...Output line (manipulated amount output line), 13,15...Power consumption circuit,
19... Buffer, 21... Output circuit (current conversion circuit), 23... Filter, L... Coil, R1
, R2, R4...Resistance, R3...Load resistance, Q1
~Q3...transistor.

Claims

[Claims for Utility Model Registration] (1) A control circuit that calculates a manipulated variable for a controlled object and outputs a control signal, and an output circuit that outputs a control output by operating in response to the control signal from this control circuit. A controller comprising: a power consumption circuit that consumes power by decreasing or increasing the increase or decrease in the drive current to the output circuit per predetermined period as a dummy current. . (2) The output circuit is turned ON according to the control signal.
2. The power consumption circuit includes a relay circuit that controls ON/OFF of a control output by a /OFF operation, and the power consumption circuit consumes power equivalent to ON operation power of the relay circuit when the relay circuit is turned OFF. 1. The controller described in 1. (3) The output circuit includes an output conversion circuit that converts and outputs the control signal format by an operation according to the control signal, and the power consumption circuit converts the increase in drive current to the output conversion circuit. 2. The controller according to claim 1, wherein the controller consumes power by decreasing or increasing the amount of the decrease.