JPS5580104A - Closed loop control circuit - Google Patents

Closed loop control circuit

Info

Publication number
JPS5580104A
JPS5580104A JP15392678A JP15392678A JPS5580104A JP S5580104 A JPS5580104 A JP S5580104A JP 15392678 A JP15392678 A JP 15392678A JP 15392678 A JP15392678 A JP 15392678A JP S5580104 A JPS5580104 A JP S5580104A
Authority
JP
Japan
Prior art keywords
resistance
diode
voltage drop
operator
capacitor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP15392678A
Other languages
Japanese (ja)
Inventor
Keiichi Mori
Yasukiyo Ueda
Keijiro Mori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP15392678A priority Critical patent/JPS5580104A/en
Priority to GB7941633A priority patent/GB2038039B/en
Priority to US06/100,529 priority patent/US4393858A/en
Priority to AU53557/79A priority patent/AU531438B2/en
Priority to DE2949241A priority patent/DE2949241C2/en
Priority to IT51039/79A priority patent/IT1164848B/en
Priority to CA000341522A priority patent/CA1149042A/en
Priority to FR7930235A priority patent/FR2444230A1/en
Publication of JPS5580104A publication Critical patent/JPS5580104A/en
Pending legal-status Critical Current

Links

Landscapes

  • Feedback Control In General (AREA)

Abstract

PURPOSE: To make it possible to reduce a rise in the temperature of hot water by limiting a voltage higher than a fixed value by by-passing a diode in parallel to a circuit of a resistance and capacitor, when a voltage drop across the resistance and capacitor increases above a forward voltage drop across the diode.
CONSTITUTION: As detector 7, a negative-characteristic thermistor is used and as control valve 5, an electromagnetic proportional control valve is used to lead a potential divided by thermistor 7 and resistance 10 to the negative input terminal of operator 12 via resistance 11 and also to lead potential E divided by resistances 21 and 22 to the positive input terminal of operator 12. Then, the comparison difference output of operator 12 is inverted to control proportional valve 5 via transistor 13. Here, when a voltage drop across resistance 14 and capacitor 19 increases above forward voltage drop VF across diode 23, diode 23 is by-passed to limit a voltage higher than VF, causing no charge. Consequently, the time from the whole performance range to a control range is shortened in the same integral time and a rise in the temperature of hot water attending upon it can be reduced.
COPYRIGHT: (C)1980,JPO&Japio
JP15392678A 1978-12-11 1978-12-12 Closed loop control circuit Pending JPS5580104A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP15392678A JPS5580104A (en) 1978-12-12 1978-12-12 Closed loop control circuit
GB7941633A GB2038039B (en) 1978-12-11 1979-12-03 Automatic temperature control of water heater
US06/100,529 US4393858A (en) 1978-12-11 1979-12-05 Combustion control system
AU53557/79A AU531438B2 (en) 1978-12-11 1979-12-06 Combustion control system
DE2949241A DE2949241C2 (en) 1978-12-11 1979-12-07 Combustion control device
IT51039/79A IT1164848B (en) 1978-12-11 1979-12-10 IMPROVEMENT IN COMBUSTION CONTROL SYSTEMS FOR EXAMPLE FOR WATER HEATER
CA000341522A CA1149042A (en) 1978-12-11 1979-12-10 Combustion system with electronic circuit controls
FR7930235A FR2444230A1 (en) 1978-12-11 1979-12-10 COMBUSTION ADJUSTING DEVICE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15392678A JPS5580104A (en) 1978-12-12 1978-12-12 Closed loop control circuit

Publications (1)

Publication Number Publication Date
JPS5580104A true JPS5580104A (en) 1980-06-17

Family

ID=15573092

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15392678A Pending JPS5580104A (en) 1978-12-11 1978-12-12 Closed loop control circuit

Country Status (1)

Country Link
JP (1) JPS5580104A (en)

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