JPS57142566A - Wave shaping circuit - Google Patents

Wave shaping circuit

Info

Publication number
JPS57142566A
JPS57142566A JP56026861A JP2686181A JPS57142566A JP S57142566 A JPS57142566 A JP S57142566A JP 56026861 A JP56026861 A JP 56026861A JP 2686181 A JP2686181 A JP 2686181A JP S57142566 A JPS57142566 A JP S57142566A
Authority
JP
Japan
Prior art keywords
voltage
input signal
goes
peak
signal vin
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
JP56026861A
Other languages
Japanese (ja)
Inventor
Kunihiro Yamada
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP56026861A priority Critical patent/JPS57142566A/en
Publication of JPS57142566A publication Critical patent/JPS57142566A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/04—Measuring peak values or amplitude or envelope of ac or of pulses

Abstract

PURPOSE:To make it possible to perform peak sensing without the influence of the variation in signal level of an input signal by applying an input signal to the first input terminal of a comparator and the output of a peak voltage holder to the second input terminal through a voltage divider. CONSTITUTION:When an input signal VIN goes up to a positive voltage, a diode D1 goes into the state to pass current, and a condenser C1 is charged. This charge voltage is divided by resistances R1 and R2, and applied to the input terminal for inversion of a comparator COM. Afterwards, the input signal VIN falls towards a negative voltage, and the diode D1 goes into the state to pass no current, and the output signal is not generated even if the input signal VIN rises to a positive voltage, when its maximum voltage is not larger than V1. When the input signal VIN reaches again a peak voltage, the capacitor C1 is charged again and an output signal VOUT is generated. By this, the set voltage for comparison is automatically corrected, and proper peak sensing can be made at all times.
JP56026861A 1981-02-27 1981-02-27 Wave shaping circuit Pending JPS57142566A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56026861A JPS57142566A (en) 1981-02-27 1981-02-27 Wave shaping circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56026861A JPS57142566A (en) 1981-02-27 1981-02-27 Wave shaping circuit

Publications (1)

Publication Number Publication Date
JPS57142566A true JPS57142566A (en) 1982-09-03

Family

ID=12205064

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56026861A Pending JPS57142566A (en) 1981-02-27 1981-02-27 Wave shaping circuit

Country Status (1)

Country Link
JP (1) JPS57142566A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS603066A (en) * 1983-06-18 1985-01-09 Sankyo Seiki Mfg Co Ltd Recognizing device of magnetic ink character

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS603066A (en) * 1983-06-18 1985-01-09 Sankyo Seiki Mfg Co Ltd Recognizing device of magnetic ink character
JPH0347552B2 (en) * 1983-06-18 1991-07-19 Sankyo Seiki Seisakusho Kk

Similar Documents

Publication Publication Date Title
JPS57142566A (en) Wave shaping circuit
US4550308A (en) Signal converting apparatus
EP0210697A3 (en) Producing a digital representation of the time-integral of an electric current
US3793540A (en) Constant current source for time delay device
JPS5770404A (en) Capacitance detecting circuit
SU1012438A1 (en) Pulse-time converter
SU752364A1 (en) Multiplier-divider
SU1193781A1 (en) Pulser
JPS54151359A (en) Phase comparator
SU480180A1 (en) Finite Time Sequence Sensor
GB1212578A (en) Capacitor charge replacement circuit
JPS57142027A (en) Pulse generating circuit
SU430491A1 (en) VOLTAGE CONVERTER IN FREQUENCY
SU453793A1 (en) VOLTAGE CONVERTER INTO THE FREQUENCY OF FOLLOWING PULSES •:?: '•: T be
JPS5824517Y2 (en) Pre-operation signal sending circuit
JPS5776922A (en) Timer circuit
JPS57203319A (en) Pulse delaying circuit
SU552676A1 (en) Standby Multivibrator
SU951592A1 (en) Stabilized step-down ac converter
JPS5780826A (en) Waveform shaping circuit
SU949811A1 (en) Voltage to time interval converter
SU790268A1 (en) Device for monitoring pulse repetition frequency
JPS5474661A (en) Waveform generation circuit
JPS56117422A (en) Forming circuit of triangular wave signal
JPS54151362A (en) Pulse converter