GB1516200A - Gated ramp generator - Google Patents

Gated ramp generator

Info

Publication number
GB1516200A
GB1516200A GB3532675A GB3532675A GB1516200A GB 1516200 A GB1516200 A GB 1516200A GB 3532675 A GB3532675 A GB 3532675A GB 3532675 A GB3532675 A GB 3532675A GB 1516200 A GB1516200 A GB 1516200A
Authority
GB
United Kingdom
Prior art keywords
transistor
voltage
capacitor
ramp
constant current
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
GB3532675A
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.)
Tektronix Inc
Original Assignee
Tektronix Inc
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 Tektronix Inc filed Critical Tektronix Inc
Publication of GB1516200A publication Critical patent/GB1516200A/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
    • H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
    • H03K4/48—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices
    • H03K4/50—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices in which a sawtooth voltage is produced across a capacitor

Landscapes

  • Dc-Dc Converters (AREA)
  • Electronic Switches (AREA)
  • Details Of Television Scanning (AREA)

Abstract

1516200 Transistor ramp voltage generating circuits TEKTRONIX Inc 27 Aug 1975 [7 Oct 1974] 35326/75 Heading H3T In a ramp generator, a capacitor 50 is charged from a constant current source 52 and subsequently discharged into a constant current sink 66 under control of a gating circuit (e.g. in the form of an emitter coupled pair of transmitters 62, 64). The voltage at the foot of the ramp is stabilized by a feedback circuit which compares the voltage with a reference Vref by means of an amplifier 58 which produces an error current which is fed to the capacitor 50. As described, initially, transistor 62 is turned off so that transistor 64 directs the charging current IT into the sink 66, the quiescent voltage across capacitor 50 being stabilized by feedback circuit including amplifiers 56 and 58 which compares the voltage with Vref. In order to generate a ramp, transistor 62 is turned on so as to turn off 64 and divert the constant current 52 into the capacitor 50. Diode 68 prevents saturation of transistor 62. Current Is should be much greater than I T .
GB3532675A 1974-10-07 1975-08-27 Gated ramp generator Expired GB1516200A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US51263374A 1974-10-07 1974-10-07

Publications (1)

Publication Number Publication Date
GB1516200A true GB1516200A (en) 1978-06-28

Family

ID=24039914

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3532675A Expired GB1516200A (en) 1974-10-07 1975-08-27 Gated ramp generator

Country Status (6)

Country Link
JP (1) JPS5164357A (en)
CA (1) CA1038049A (en)
DE (1) DE2543777B2 (en)
FR (1) FR2287808A1 (en)
GB (1) GB1516200A (en)
NL (1) NL168670C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2160047A (en) * 1984-06-05 1985-12-11 Motorola Inc Linearity control of vertical scan waveform
EP0669719A1 (en) * 1994-02-25 1995-08-30 Texas Instruments Incorporated Method and circuit for reducing transient currents

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2493084A1 (en) * 1980-10-28 1982-04-30 Thomson Brandt VERTICAL AND / OR HORIZONTAL SCANNING DEVICE AND TELEVISION RECEIVER COMPRISING SUCH A DEVICE
NL9001856A (en) * 1990-08-23 1992-03-16 Philips Nv SAW TOOTH GENERATOR AND OSCILLOSCOPE WITH SUCH SAW TOOTH GENERATOR.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1393679A (en) * 1964-03-17 1965-03-26 Tektronix Inc Ramp-shaped signal generator circuit
FR1582631A (en) * 1968-08-14 1969-10-03
JPS498446B1 (en) * 1970-05-07 1974-02-26

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2160047A (en) * 1984-06-05 1985-12-11 Motorola Inc Linearity control of vertical scan waveform
EP0669719A1 (en) * 1994-02-25 1995-08-30 Texas Instruments Incorporated Method and circuit for reducing transient currents

Also Published As

Publication number Publication date
FR2287808A1 (en) 1976-05-07
JPS5535012B2 (en) 1980-09-11
CA1038049A (en) 1978-09-05
JPS5164357A (en) 1976-06-03
FR2287808B1 (en) 1979-10-12
NL168670C (en) 1982-04-16
DE2543777C3 (en) 1979-03-22
DE2543777A1 (en) 1976-04-08
NL168670B (en) 1981-11-16
NL7510114A (en) 1976-04-09
DE2543777B2 (en) 1978-07-13

Similar Documents

Publication Publication Date Title
GB946929A (en) A voltage comparator including semiconductor current amplifiers
ES371703A1 (en) Phase splitting amplifier
GB1405497A (en) Voltage regulator circuit
GB1081787A (en) Static inverter
GB1485905A (en) Gain control circuit
GB1148426A (en) Electron beam apparatus including filament current control means
GB1516200A (en) Gated ramp generator
ES444185A1 (en) Means for controlling the electric current density of a high tension direct current source
GB1366271A (en) Signal control circuit
GB1343251A (en) Dc voltage regulator circuit
GB1469990A (en) Gain control circuit
JPS5374348A (en) Transistor amplifying circuit
JPS56140685A (en) Dc bias circuit for semiconductor laser
JPS5452485A (en) Output stabilizing circuit of semiconductor laser equipment
JPS5671119A (en) Control circuit
GB1142576A (en) Improvements in or relating to stabilised d.c. supply systems
GB972303A (en) Multi-frequency frame scan generator for television apparatus
GB1410199A (en) Switch control circuit
GB1450469A (en) Signal level comparator
GB982569A (en) Improvements in or relating to electric oscillator arrangements
GB1038583A (en) Welding control circuit
JPS5671120A (en) Power supply circuit
GB1531822A (en) Deflection circuits for electron beam vertical deflection
GB947953A (en) Improvements in voltage stabilizing circuits employing semiconducting elements
GB1002049A (en) Improvements in regulated d.c. supplies

Legal Events

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