GB1062523A - Improvements in and relating to electrical waveform generators - Google Patents

Improvements in and relating to electrical waveform generators

Info

Publication number
GB1062523A
GB1062523A GB4542061A GB4542061A GB1062523A GB 1062523 A GB1062523 A GB 1062523A GB 4542061 A GB4542061 A GB 4542061A GB 4542061 A GB4542061 A GB 4542061A GB 1062523 A GB1062523 A GB 1062523A
Authority
GB
United Kingdom
Prior art keywords
resistors
amplifier
fed
waveform
resistor
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
GB4542061A
Inventor
John Joseph Ward
Brian Dennis Mccarthy
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.)
Specto Ltd
Original Assignee
Specto 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 Specto Ltd filed Critical Specto Ltd
Priority to GB4542061A priority Critical patent/GB1062523A/en
Publication of GB1062523A publication Critical patent/GB1062523A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/02—Generating pulses having essentially a finite slope or stepped portions having stepped portions, e.g. staircase waveform
    • H03K4/026—Generating pulses having essentially a finite slope or stepped portions having stepped portions, e.g. staircase waveform using digital techniques
    • 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
    • G06G7/26—Arbitrary function generators
    • G06G7/28—Arbitrary function generators for synthesising functions by piecewise approximation

Abstract

1,062,523. Electric analogue calculating. SPECTO Ltd. March 19, 1963 [Dec. 19, 1961], No. 45420/61. Heading G4G. [Also in Division H3] A waveform generator comprises a plurality of resistors connected via a common resistor to the input of a virtual-earth amplifier, current being switched in sequence through the resistors so as to develop the required waveform, the common resistor determining the effective load on the plurality of resistors. In Fig. 6 pulses are fed in sequence to a series arrangement of resistors (R1 ... R26) and via a high value resistor R L <SP>1</SP> to the virtual-earth amplifier Tr4. The input voltage may assume a staircase waveform which is converted to a sawtooth waveform by a feedback capacitor (C fb ). Current from other resistor arrangements may be fed in under control of gating transistors (Tr1 ... Tr3). A buffer amplifier and low-pass filter (Fig. 3, not shown) may be interposed between the resistors and the amplifier. In Fig. 1 (not shown) current pulses are fed in sequentially via parallel resistors. Reference has been directed by the Comptroller to Specification 895,201.
GB4542061A 1961-12-19 1961-12-19 Improvements in and relating to electrical waveform generators Expired GB1062523A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4542061A GB1062523A (en) 1961-12-19 1961-12-19 Improvements in and relating to electrical waveform generators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4542061A GB1062523A (en) 1961-12-19 1961-12-19 Improvements in and relating to electrical waveform generators

Publications (1)

Publication Number Publication Date
GB1062523A true GB1062523A (en) 1967-03-22

Family

ID=10437147

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4542061A Expired GB1062523A (en) 1961-12-19 1961-12-19 Improvements in and relating to electrical waveform generators

Country Status (1)

Country Link
GB (1) GB1062523A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009095279A1 (en) * 2008-01-28 2009-08-06 Cambridge Silicon Radio Limited Mixing waveforms

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009095279A1 (en) * 2008-01-28 2009-08-06 Cambridge Silicon Radio Limited Mixing waveforms
US8207793B2 (en) 2008-01-28 2012-06-26 Cambridge Silicon Radio Limited Mixing waveforms

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