GB1421322A - Electrical signal modulator - Google Patents

Electrical signal modulator

Info

Publication number
GB1421322A
GB1421322A GB543175A GB543175A GB1421322A GB 1421322 A GB1421322 A GB 1421322A GB 543175 A GB543175 A GB 543175A GB 543175 A GB543175 A GB 543175A GB 1421322 A GB1421322 A GB 1421322A
Authority
GB
United Kingdom
Prior art keywords
pulse
output
modulator
input
levels
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.)
Expired
Application number
GB543175A
Other languages
English (en)
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.)
Technical Management Services
Original Assignee
Technical Management Services
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 Technical Management Services filed Critical Technical Management Services
Priority claimed from US05/351,502 external-priority patent/US3944852A/en
Priority claimed from US05/596,818 external-priority patent/USRE29079E/en
Priority claimed from US05/627,878 external-priority patent/US3995178A/en
Publication of GB1421322A publication Critical patent/GB1421322A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/02—Measuring characteristics of individual pulses, e.g. deviation from pulse flatness, rise time or duration
    • G01R29/027—Indicating that a pulse characteristic is either above or below a predetermined value or within or beyond a predetermined range of values
    • G01R29/0273—Indicating that a pulse characteristic is either above or below a predetermined value or within or beyond a predetermined range of values the pulse characteristic being duration, i.e. width (indicating that frequency of pulses is above or below a certain limit)
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00—Arrangements for measuring electric power or power factor
    • G01R21/127—Arrangements for measuring electric power or power factor by using pulse modulation
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/72—Gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K7/00—Modulating pulses with a continuously-variable modulating signal
    • H03K7/02—Amplitude modulation, i.e. PAM
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K7/00—Modulating pulses with a continuously-variable modulating signal
    • H03K7/06—Frequency or rate modulation, i.e. PFM or PRM
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K7/00—Modulating pulses with a continuously-variable modulating signal
    • H03K7/08—Duration or width modulation ; Duty cycle modulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • Amplifiers (AREA)
GB543175A 1971-12-21 1972-12-21 Electrical signal modulator Expired GB1421322A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US21045671A 1971-12-21 1971-12-21
US05/351,502 US3944852A (en) 1970-01-27 1973-04-16 Electrical switching device and modulator using same
US05/596,818 USRE29079E (en) 1970-01-27 1975-07-17 Multiplier, divider and wattmeter using a switching circuit and a pulse-width and frequency modulator
US05/627,878 US3995178A (en) 1971-09-27 1975-10-31 Pulse-width and frequency modulator circuit

Publications (1)

Publication Number Publication Date
GB1421322A true GB1421322A (en) 1976-01-14

Family

ID=27498804

Family Applications (1)

Application Number Title Priority Date Filing Date
GB543175A Expired GB1421322A (en) 1971-12-21 1972-12-21 Electrical signal modulator

Country Status (5)

Country Link
JP (1) JPS4871857A (cs)
CA (1) CA975850A (cs)
CH (1) CH584946A5 (cs)
DE (1) DE2262717A1 (cs)
GB (1) GB1421322A (cs)

Also Published As

Publication number Publication date
JPS4871857A (cs) 1973-09-28
DE2262717A1 (de) 1973-06-28
CA975850A (en) 1975-10-07
CH584946A5 (cs) 1977-02-15

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee