GB1285666A - Improvements relating to contactless blocking circuits for push-pull oscillators - Google Patents

Improvements relating to contactless blocking circuits for push-pull oscillators

Info

Publication number
GB1285666A
GB1285666A GB369870A GB369870A GB1285666A GB 1285666 A GB1285666 A GB 1285666A GB 369870 A GB369870 A GB 369870A GB 369870 A GB369870 A GB 369870A GB 1285666 A GB1285666 A GB 1285666A
Authority
GB
United Kingdom
Prior art keywords
circuit
blocking
control
photocell
jan
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
GB369870A
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.)
CEAG Concordia Elekrizitats AG
Original Assignee
CEAG Concordia Elekrizitats AG
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 CEAG Concordia Elekrizitats AG filed Critical CEAG Concordia Elekrizitats AG
Publication of GB1285666A publication Critical patent/GB1285666A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/5383—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a self-oscillating arrangement
    • H02M7/53846—Control circuits
    • H02M7/53862—Control circuits using transistor type converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/5383—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a self-oscillating arrangement
    • H02M7/53846—Control circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

1285666 Control systems for gas discharge lamps CEAG CONCORDIA ELEKTRIZITATS-AG 26 Jan 1970 [29 Jan 1969] 3698/70 Heading H2H [Also in Divisions H3 and G1] A circuit for energizing a loade.g. afluorescent tube 3, comprises push-pull oscillator transistors T 1 , T 2 , oscillations initiating resistor 6 and a blocking circuit comprising transistors T 3 , T 4 , the arrangement being such that when T 3 , T 4 are conducting, the base, emitter potentials of T 2 are made substantially equal thus blocking the oscillator. The blocking circuit may be associated with a passive control circuit A<SP>1</SP>, B<SP>1</SP>, C<SP>1</SP> including a photocell 10 and an active control circuit A<SP>11</SP>, B<SP>11</SP>, C<SP>11</SP> including a mains supply circuit 14, 15 and a control transistor T 5 . In the normal state, transistor T 5 is cut off by biasing diode 12; T 3 , T 4 conduct to block oscillations and battery 1 charges up from the mains. When the mains supply fails, T 5 conducts to cut off T 3 , T 4 provided ambient light as detected by photocell 10 is below a predetermined value and circuit T 1 , T 2 oscillates to supply power to load 3. The control circuits A<SP>1</SP>, B<SP>1</SP>, C<SP>1</SP>, and A<SP>11</SP>, B<SP>11</SP>, C<SP>11</SP> may also be used separately with the blocking circuit T 3 , T 4 .
GB369870A 1969-01-29 1970-01-26 Improvements relating to contactless blocking circuits for push-pull oscillators Expired GB1285666A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691904294 DE1904294A1 (en) 1969-01-29 1969-01-29 Contactless blocking circuit for push-pull chopper

Publications (1)

Publication Number Publication Date
GB1285666A true GB1285666A (en) 1972-08-16

Family

ID=5723672

Family Applications (1)

Application Number Title Priority Date Filing Date
GB369870A Expired GB1285666A (en) 1969-01-29 1970-01-26 Improvements relating to contactless blocking circuits for push-pull oscillators

Country Status (5)

Country Link
BE (1) BE745124A (en)
DE (1) DE1904294A1 (en)
FR (1) FR2037316A5 (en)
GB (1) GB1285666A (en)
NL (1) NL7000979A (en)

Also Published As

Publication number Publication date
NL7000979A (en) 1970-07-31
BE745124A (en) 1970-07-01
FR2037316A5 (en) 1970-12-31
DE1904294A1 (en) 1970-08-06

Similar Documents

Publication Publication Date Title
GB1367659A (en) Circuit for supplying a regulated voltage
GB1049711A (en) Improvements in and relating to negative-resistance circuit arrangements
GB1490221A (en) Electronic monitoring apparatus which preferably works without being touched
GB1233841A (en)
GB1285666A (en) Improvements relating to contactless blocking circuits for push-pull oscillators
GB1344014A (en) Self-compensated low voltage amplifier
GB1289930A (en)
GB1321459A (en) Circuit arrangement for realising logical functions
GB1138634A (en) Logarithmic amplifier
GB1190185A (en) Light Sensitive Circuit Arrangements
GB1035635A (en) Improvements in or relating to transistor circuit arrangements for supplying a voltage to a load
US3354325A (en) Bistable electronic circuit having oscillatory and non-oscillatory stable states
SU476631A1 (en) Transistor amplifier
GB799881A (en) Bi-stable transistor circuit
GB1108449A (en) Compressor amplifier
GB1225393A (en)
SU428528A1 (en) EMITTER REPEATER1
GB1257153A (en)
GB1339908A (en) Microampere current source
SU445136A1 (en) Sawtooth Transistor Generator
GB1014104A (en) Light-operated switching circuits
GB1252727A (en)
GB964898A (en) Bistable circuit with negative resistance diode
GB1029531A (en) Logic circuit
JPS52102660A (en) Transistor output circuit

Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee