GB1117931A - Improvements in or relating to wave form generators - Google Patents

Improvements in or relating to wave form generators

Info

Publication number
GB1117931A
GB1117931A GB237665A GB237665A GB1117931A GB 1117931 A GB1117931 A GB 1117931A GB 237665 A GB237665 A GB 237665A GB 237665 A GB237665 A GB 237665A GB 1117931 A GB1117931 A GB 1117931A
Authority
GB
United Kingdom
Prior art keywords
transistor
condenser
period
amplitude
resistors
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
GB237665A
Inventor
Derrick John Grover
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.)
Marconi Instruments Ltd
Original Assignee
Marconi Instruments 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 Marconi Instruments Ltd filed Critical Marconi Instruments Ltd
Priority to GB237665A priority Critical patent/GB1117931A/en
Publication of GB1117931A publication Critical patent/GB1117931A/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
    • H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape

Landscapes

  • Control Of Eletrric Generators (AREA)

Abstract

1,117,931. Transistor sawtooth generators. MARCONI INSTRUMENTS Ltd. 28 Oct., 1965 [19 Jan., 1965], No. 2376/65. Heading H3T. A generator for producing a triangular wave form of adjustable slopes but constant period and amplitude, comprises a condenser having charging and discharging means wherein the discharging current is greater than the charging current; means controlled by the condenser voltage for interrupting the discharging current when the voltage reaches a predetermined lower value and restoring it when the voltage reaches a predetermined upper value; and gang controlled adjustable resistors in the charging and discharging paths so arranged that for all settings of the gang control the period of the wave is constant. Condenser 1 is charged through resistor 3 and transistor 2 until its potential reaches the predetermined upper value, when transistor 10 is switched on, cutting off transistors 11, 12 and 13 and switching on transistor 4. The condenser 1 then discharges through transistor 4 and resistor 56 until the predetermined lower potential is reached, and the states of transistors 4 and 10- 13 are reversed. Resistors 3 and 56 are gangedit is shown in the specification that for any setting of the gang control the period of the triangular wave produced at 7 (i.e. time for condenser to charge through transistor 2 and then discharge through transistor 4) and its amplitude are constant but the two slopes of the wave are varied. Condenser 1 and resistors 14 and 15 may be adjustable to vary the period and amplitude.
GB237665A 1965-01-19 1965-01-19 Improvements in or relating to wave form generators Expired GB1117931A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB237665A GB1117931A (en) 1965-01-19 1965-01-19 Improvements in or relating to wave form generators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB237665A GB1117931A (en) 1965-01-19 1965-01-19 Improvements in or relating to wave form generators

Publications (1)

Publication Number Publication Date
GB1117931A true GB1117931A (en) 1968-06-26

Family

ID=9738462

Family Applications (1)

Application Number Title Priority Date Filing Date
GB237665A Expired GB1117931A (en) 1965-01-19 1965-01-19 Improvements in or relating to wave form generators

Country Status (1)

Country Link
GB (1) GB1117931A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2511783A1 (en) * 1981-08-21 1983-02-25 Tektronix Inc FUNCTION GENERATORS WITH INDEPENDENT CONTROL OF WAVEFORM AND FREQUENCY
WO2013057466A2 (en) 2011-10-18 2013-04-25 Cummins Generator Technologies Limited Housing for electrical machines
WO2013076442A2 (en) 2011-11-22 2013-05-30 Cummins Generator Technologies Limited Connecting a rotating electrical machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2511783A1 (en) * 1981-08-21 1983-02-25 Tektronix Inc FUNCTION GENERATORS WITH INDEPENDENT CONTROL OF WAVEFORM AND FREQUENCY
WO2013057466A2 (en) 2011-10-18 2013-04-25 Cummins Generator Technologies Limited Housing for electrical machines
WO2013076442A2 (en) 2011-11-22 2013-05-30 Cummins Generator Technologies Limited Connecting a rotating electrical machine

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