GB1500991A - Electric supply apparatus and to electrostatic coating apparatus - Google Patents

Electric supply apparatus and to electrostatic coating apparatus

Info

Publication number
GB1500991A
GB1500991A GB162875A GB162875A GB1500991A GB 1500991 A GB1500991 A GB 1500991A GB 162875 A GB162875 A GB 162875A GB 162875 A GB162875 A GB 162875A GB 1500991 A GB1500991 A GB 1500991A
Authority
GB
United Kingdom
Prior art keywords
threshold
transistor
exceeds
transistors
subtracted
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
GB162875A
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.)
Ransburg Corp
Original Assignee
Ransburg 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
Priority claimed from US00433265A external-priority patent/US3851618A/en
Priority claimed from US433266A external-priority patent/US3875892A/en
Application filed by Ransburg Corp filed Critical Ransburg Corp
Publication of GB1500991A publication Critical patent/GB1500991A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
    • H02H5/12—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to undesired approach to, or touching of, live parts by living beings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/08—Plant for applying liquids or other fluent materials to objects
    • B05B5/10—Arrangements for supplying power, e.g. charging power
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/44—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to the rate of change of electrical quantities
    • H02H3/445—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to the rate of change of electrical quantities of DC quantities
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/003—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for electrostatic apparatus

Abstract

1500991 Transistor switching circuits RANSBURG CORP 14 Jan 1975 [14 Jan 1974 (2)] 1628/75 Heading H3T [Also in Division H2] To determine whether the rate of change of an input signal (from terminal 26a) exceeds a threshold, the signal level during a first time interval is stored (28, 29), and the signal level during an immediately succeeding time interval is then subtracted (32) from the stored level to determine whether the difference exceeds a threshold, the store-subtract sequence taking place repetitively. Clock pulses derived from the mains supply render transistors 57, 58 conductive alternately, and these in turn render transistors 61, 62 effective alternately to amplify the input signal. The load circuit of transistor 62 includes a storage capacitor 66, whilst the output of transistor 61 is inverted so that the signals from the two transistors are subtracted at the input of amplifier 73. A monostable 79 is triggered if the amplifier output exceeds a threshold.
GB162875A 1974-01-14 1975-01-14 Electric supply apparatus and to electrostatic coating apparatus Expired GB1500991A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US00433265A US3851618A (en) 1974-01-14 1974-01-14 Electrostatic coating apparatus
US433266A US3875892A (en) 1974-01-14 1974-01-14 Apparatus for avoiding sparks in an electrostatic coating system

Publications (1)

Publication Number Publication Date
GB1500991A true GB1500991A (en) 1978-02-15

Family

ID=27029789

Family Applications (2)

Application Number Title Priority Date Filing Date
GB162875A Expired GB1500991A (en) 1974-01-14 1975-01-14 Electric supply apparatus and to electrostatic coating apparatus
GB162975A Expired GB1500992A (en) 1974-01-14 1975-01-14 Electric supply apparatus and to high-voltage electrostatic apparatus

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB162975A Expired GB1500992A (en) 1974-01-14 1975-01-14 Electric supply apparatus and to high-voltage electrostatic apparatus

Country Status (3)

Country Link
DE (1) DE2501235C3 (en)
FR (1) FR2258030B1 (en)
GB (2) GB1500991A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2211683A (en) * 1986-08-29 1989-07-05 Cezhan Chen Automatic electric shock protector apparatus

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4075677A (en) * 1976-08-09 1978-02-21 Ransburg Corporation Electrostatic coating system
DE3219236A1 (en) * 1981-07-08 1983-01-27 Ernst Roederstein Spezialfabrik für Kondensatoren GmbH, 8300 Landshut Method and control device for controlling the high-voltage device of an electrostatic coating apparatus
US4402030A (en) * 1982-02-19 1983-08-30 Champion Spark Plug Company Electrostatic voltage control circuit
DE3709509A1 (en) * 1987-03-23 1988-10-06 Behr Industrieanlagen Monitoring system for an electrostatic coating plant

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2211683A (en) * 1986-08-29 1989-07-05 Cezhan Chen Automatic electric shock protector apparatus
GB2211683B (en) * 1986-08-29 1992-02-26 Cezhan Chen Full automatic electric shock protector apparatus

Also Published As

Publication number Publication date
DE2501235A1 (en) 1975-07-17
GB1500992A (en) 1978-02-15
DE2501235B2 (en) 1980-01-17
FR2258030A1 (en) 1975-08-08
DE2501235C3 (en) 1980-09-11
FR2258030B1 (en) 1978-12-08

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Legal Events

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