GB1158143A - Positive/Negative Switching Circuit - Google Patents

Positive/Negative Switching Circuit

Info

Publication number
GB1158143A
GB1158143A GB1742565A GB1742565A GB1158143A GB 1158143 A GB1158143 A GB 1158143A GB 1742565 A GB1742565 A GB 1742565A GB 1742565 A GB1742565 A GB 1742565A GB 1158143 A GB1158143 A GB 1158143A
Authority
GB
United Kingdom
Prior art keywords
positive
switching circuit
negative switching
negative
switch
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
GB1742565A
Inventor
James Edward Attew
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.)
AUTOMATIC INFORMATION DATA SER
Original Assignee
AUTOMATIC INFORMATION DATA SER
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 AUTOMATIC INFORMATION DATA SER filed Critical AUTOMATIC INFORMATION DATA SER
Priority to GB1742565A priority Critical patent/GB1158143A/en
Priority to BE666500D priority patent/BE666500A/fr
Publication of GB1158143A publication Critical patent/GB1158143A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
    • B61B10/00—Power and free systems
    • B61B10/02—Power and free systems with suspended vehicles
    • B61B10/022—Vehicles; trolleys
    • 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

Abstract

1,158,143. Transistor circuits. AUTOMATIC INFORMATION DATA SERVICE Ltd. 22 July, 1966 [26 April, 1965], No. 17425/65. Heading H3T. A phase-splitting transistor VT having equal emitter and collector resistors R 1 , R 2 is provided with oppositely directed diodes D 1 , D 2 biased from a change over switch SW such that it provides positive or negative-going video signals at 14 depending on the setting of switch SW.
GB1742565A 1964-07-07 1965-04-26 Positive/Negative Switching Circuit Expired GB1158143A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1742565A GB1158143A (en) 1965-04-26 1965-04-26 Positive/Negative Switching Circuit
BE666500D BE666500A (en) 1964-07-07 1965-07-07

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1742565A GB1158143A (en) 1965-04-26 1965-04-26 Positive/Negative Switching Circuit

Publications (1)

Publication Number Publication Date
GB1158143A true GB1158143A (en) 1969-07-16

Family

ID=10094983

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1742565A Expired GB1158143A (en) 1964-07-07 1965-04-26 Positive/Negative Switching Circuit

Country Status (1)

Country Link
GB (1) GB1158143A (en)

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees