[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

GB1252006A - - Google Patents

Info

Publication number
GB1252006A
GB1252006A GB1225568A GB1252006DA GB1252006A GB 1252006 A GB1252006 A GB 1252006A GB 1225568 A GB1225568 A GB 1225568A GB 1252006D A GB1252006D A GB 1252006DA GB 1252006 A GB1252006 A GB 1252006A
Authority
GB
United Kingdom
Prior art keywords
battery
voltage
transistor
current
zener diode
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
GB1225568A
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 filed Critical
Publication of GB1252006A publication Critical patent/GB1252006A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)

Abstract

1,252,006. Battery charging circuits. N.V. TOOLS Ltd. 12 Feb., 1969 [13 March, 1968], No. 12255/68. Heading H2H. [Also in Division G3] A battery charging circuit only delivers an appreciable charging current when the voltage across its output terminals is greater than a first non-zero value below the completely discharged battery voltage, and less than a value below the fully charged voltage of the battery. The charging current in a part of this range is substantially constant. As shown in Fig. 2, the battery B is connected in series with a first transistor TR1, the base of which is supplied from a second transistor TR2 only when the battery voltage is sufficient to break down a Zener diode ZD2. This arrangement prevents current flow if the output terminals of the circuit are shorted together. Initially, a further Zener diode ZD1 will be blocked, and the current will rise rapidly as the battery is charged until a voltage is reached at which the Zener diode ZD1 breaks down. The charging current will now remain substantially constant with increasing voltage until the fully-charged voltage is almost reached, whereupon the current will rapidly decrease owing to the emitter potential of transistor TR2 approaching the base potential of the same transistor and thus reducing the drive to transistor TR1. A diode D1 prevents any current flow if the battery is connected the wrong way round.
GB1225568A 1968-03-13 1968-03-13 Expired GB1252006A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1225568 1968-03-13

Publications (1)

Publication Number Publication Date
GB1252006A true GB1252006A (en) 1971-11-03

Family

ID=10001211

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1225568A Expired GB1252006A (en) 1968-03-13 1968-03-13

Country Status (1)

Country Link
GB (1) GB1252006A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2524790A1 (en) * 1974-06-10 1975-12-11 Gates Rubber Co CIRCUIT ARRANGEMENT FOR A BATTERY CHARGER
US3997830A (en) * 1974-11-27 1976-12-14 Rca Corporation Satellite battery reconditioning system and method
US4458195A (en) * 1982-03-02 1984-07-03 R. E. Phelon Company, Inc. Electronic regulator for alternator battery charging system
GB2178608A (en) * 1985-06-14 1987-02-11 Yu Zhiwei Recharging dry cell batteries

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2524790A1 (en) * 1974-06-10 1975-12-11 Gates Rubber Co CIRCUIT ARRANGEMENT FOR A BATTERY CHARGER
US3997830A (en) * 1974-11-27 1976-12-14 Rca Corporation Satellite battery reconditioning system and method
US4458195A (en) * 1982-03-02 1984-07-03 R. E. Phelon Company, Inc. Electronic regulator for alternator battery charging system
GB2178608A (en) * 1985-06-14 1987-02-11 Yu Zhiwei Recharging dry cell batteries

Similar Documents

Publication Publication Date Title
GB1405445A (en) Transistor circuits
US4487457A (en) Gating circuit for combining series and parallel connected FETs
GB1369812A (en) Battery charging systems for road vehicles
GB1444723A (en) Battery charging systems
GB1188559A (en) Integrated Power Driver Circuit
GB1112014A (en) Rechargeable battery assembly with reverse polarity charge protection
GB980796A (en) Improvements in or relating to charging control circuits for electrochemical batteries or accumulators
GB1252006A (en)
GB1028546A (en) Extreme value switching device
EP0046498B1 (en) Bootstrapped driver circuit
US4347561A (en) Alternating current to direct current power supply
US3492559A (en) Warning lamp circuits for use in battery charging systems
GB1110066A (en) Low dissipation logic gates
US5619126A (en) Circuit arrangement for automatically decreasing the load current
GB1177408A (en) Storage Battery
US4977477A (en) Short-circuit protected switched output circuit
GB982453A (en) Improvements in transistor circuits
US3436608A (en) Trigger circuit for inductive load
GB1031462A (en) Voltage stabilisers
EP0009321B1 (en) Control apparatus for vehicle indicator lamps
GB1527756A (en) Semiconductor voltage regulator for a road vehicle battery charging system
GB1445834A (en) Battery charging systems
GB1157129A (en) Battery Charging System
GB1110067A (en) Logic circuits
GB1383673A (en) Load sensing circuits

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years