GB1430397A - Saw-tooth generator - Google Patents

Saw-tooth generator

Info

Publication number
GB1430397A
GB1430397A GB5801073A GB5801073A GB1430397A GB 1430397 A GB1430397 A GB 1430397A GB 5801073 A GB5801073 A GB 5801073A GB 5801073 A GB5801073 A GB 5801073A GB 1430397 A GB1430397 A GB 1430397A
Authority
GB
United Kingdom
Prior art keywords
capacitor
transistor
saw
conductivity type
base
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
GB5801073A
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of GB1430397A publication Critical patent/GB1430397A/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
    • H03K4/501—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 the starting point of the flyback period being determined by the amplitude of the voltage across the capacitor, e.g. by a comparator
    • H03K4/502—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 the starting point of the flyback period being determined by the amplitude of the voltage across the capacitor, e.g. by a comparator the capacitor being charged from a constant-current source

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Bipolar Integrated Circuits (AREA)
  • Details Of Television Scanning (AREA)
  • Control Of Electrical Variables (AREA)

Abstract

1430397 Saw-tooth wave generators INTERNATIONAL STANDARD ELECTRIC CORP 14 Dec 1973 [21 Dec 1972] 58010/73 Heading H3T A saw-tooth wave generator comprises a constant current source, shown as a current mirror T1, T2, connected to charge a capacitor C via a transistor T 3 of one conductivity type, a second transistor T4 connected in commonemitter configuration with T3, a third transistor T5 of the other conductivity type connected across the capacitor and a fourth transistor T6, also of the other conductivity type, connected across a portion of a potential divider R3, R4, R5 across the supply, the collector of T4 being connected to the bases of T5 and T6. In operation the capacitor-C is charged from the current source until it raises the base voltage of T3 above that of T4 whereupon the current is diverted to T4. This renders T5 conducting to discharge the capacitor and causes T6 to lower the bias voltage at the base of T4. The capacitor discharge is arrested at this value and the circuit reverts to start a new charging cycle. The generator, which is suitable for a television line time-base, may be made in integral form, transistors T1, T2 and T3 being of lateral type.
GB5801073A 1972-12-21 1973-12-14 Saw-tooth generator Expired GB1430397A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722262732 DE2262732C3 (en) 1972-12-21 1972-12-21 Monolithically integrable sawtooth generator

Publications (1)

Publication Number Publication Date
GB1430397A true GB1430397A (en) 1976-03-31

Family

ID=5865122

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5801073A Expired GB1430397A (en) 1972-12-21 1973-12-14 Saw-tooth generator

Country Status (3)

Country Link
AU (1) AU6370473A (en)
DE (1) DE2262732C3 (en)
GB (1) GB1430397A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0959561A1 (en) * 1998-12-23 1999-11-24 Hewlett-Packard Company Slope generator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0959561A1 (en) * 1998-12-23 1999-11-24 Hewlett-Packard Company Slope generator
US6316972B1 (en) 1998-12-23 2001-11-13 Agilent Technologies, Inc. Slope generator

Also Published As

Publication number Publication date
DE2262732B2 (en) 1977-12-29
AU6370473A (en) 1975-06-19
DE2262732C3 (en) 1978-08-24
DE2262732A1 (en) 1974-06-27

Similar Documents

Publication Publication Date Title
GB1007231A (en) Electrical timing circuit
GB1389723A (en) Pulse oscillator
GB1031453A (en) Free-running oscillators
GB1326810A (en) Voltage and current regulated power supply circuit for gaseous discharge lamp
GB1430397A (en) Saw-tooth generator
GB1425829A (en) Vertical deflection circuit
GB786875A (en) Improvements relating to electric wave generators utilizing semiconductor devices
GB1048213A (en) Circuit arrangement for generating two-phase voltages
GB1370105A (en) Process control apparatus
JPS5797721A (en) Oscillator
GB1438377A (en) Battery chargers
GB1030824A (en) Improvements in and relating to transistor multivibrators
US2826692A (en) Volts
GB1531822A (en) Deflection circuits for electron beam vertical deflection
SU663080A1 (en) Nanosecond pulse generator with electronic frequency control
SU486460A1 (en) Pulse generator
SU445136A1 (en) Sawtooth Transistor Generator
GB1145301A (en) Improvements relating to motor control systems
GB1337910A (en) Arrangements for controlling circuits upon initial application of a power supply
SU997235A1 (en) One-shot multivibrator
SU1573527A1 (en) Quartz oscillator crystal
SU528697A1 (en) Delay shaper
SU983987A1 (en) One-shot multivibrator
GB979503A (en) Improvements in or relating to electric circuit arrangements for generating triangular waveforms
GB1337351A (en) Electronic control circuits for a mechanical oscillator

Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee