JPS57120178A - Multiplying circuit - Google Patents

Multiplying circuit

Info

Publication number
JPS57120178A
JPS57120178A JP474681A JP474681A JPS57120178A JP S57120178 A JPS57120178 A JP S57120178A JP 474681 A JP474681 A JP 474681A JP 474681 A JP474681 A JP 474681A JP S57120178 A JPS57120178 A JP S57120178A
Authority
JP
Japan
Prior art keywords
signal
capacitor
resistance
circuit
series
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.)
Granted
Application number
JP474681A
Other languages
Japanese (ja)
Other versions
JPH0158549B2 (en
Inventor
Michio Saeki
Tadashi Kojima
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.)
Azbil Corp
Original Assignee
Azbil Corp
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 Azbil Corp filed Critical Azbil Corp
Priority to JP474681A priority Critical patent/JPS57120178A/en
Publication of JPS57120178A publication Critical patent/JPS57120178A/en
Publication of JPH0158549B2 publication Critical patent/JPH0158549B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/16—Arrangements for performing computing operations, e.g. operational amplifiers for multiplication or division
    • G06G7/161—Arrangements for performing computing operations, e.g. operational amplifiers for multiplication or division with pulse modulation, e.g. modulation of amplitude, width, frequency, phase or form

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Power Engineering (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Manipulation Of Pulses (AREA)

Abstract

PURPOSE:To obtain a multiplying circuit which obtains a signal equivalent to the product of a DC signal level and a pulse signal frequency and is suited to a water heater, by using a 1-shot circuit and a differential amplifier. CONSTITUTION:A 1-shot circuit 1 includes a comparator OP1, resistances R1 and R2, a capacitor C1 plus diodes D1 and D2. The diode D1 is connected in series to the resistance R1, and this series matter carries out the charging/discharging of the capacitor C1 by the output signal of the comparator OP1. A differential amplifying circuit 2 contains a differential amplifier OP2, resistances R3-R6, diodes D3 and D4, capacitors C2 and C3 plus a variable resistor R7. A pulse signal of a prescribed frequency is supplied to the noninverse input terminal of the amplifier OP2 via a series matter of the resistance R3 and the capacitor C2 and in the form of the 1st multiplication input signal. At the same time, a DC signal of a prescribed level of voltage is supplied to the noninverse input terminal via the resistance R5 in the form of the 2nd multiplication input signal.
JP474681A 1981-01-16 1981-01-16 Multiplying circuit Granted JPS57120178A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP474681A JPS57120178A (en) 1981-01-16 1981-01-16 Multiplying circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP474681A JPS57120178A (en) 1981-01-16 1981-01-16 Multiplying circuit

Publications (2)

Publication Number Publication Date
JPS57120178A true JPS57120178A (en) 1982-07-27
JPH0158549B2 JPH0158549B2 (en) 1989-12-12

Family

ID=11592474

Family Applications (1)

Application Number Title Priority Date Filing Date
JP474681A Granted JPS57120178A (en) 1981-01-16 1981-01-16 Multiplying circuit

Country Status (1)

Country Link
JP (1) JPS57120178A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009282782A (en) * 2008-05-22 2009-12-03 Sharp Corp Product arithmetic unit including resistance change type variable resistor element, product sum arithmetic unit, neural network providing each neuron element with these arithmetic units, and product arithmetic method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009282782A (en) * 2008-05-22 2009-12-03 Sharp Corp Product arithmetic unit including resistance change type variable resistor element, product sum arithmetic unit, neural network providing each neuron element with these arithmetic units, and product arithmetic method

Also Published As

Publication number Publication date
JPH0158549B2 (en) 1989-12-12

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