GB979767A - Improvements in or relating to variable electrical resistance networks - Google Patents

Improvements in or relating to variable electrical resistance networks

Info

Publication number
GB979767A
GB979767A GB2447760A GB2447760A GB979767A GB 979767 A GB979767 A GB 979767A GB 2447760 A GB2447760 A GB 2447760A GB 2447760 A GB2447760 A GB 2447760A GB 979767 A GB979767 A GB 979767A
Authority
GB
United Kingdom
Prior art keywords
rpv
potentiometer
rpo
shunt circuit
relating
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
GB2447760A
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.)
CECIL ROY EVANS
Servomex Controls Ltd
Original Assignee
CECIL ROY EVANS
Servomex Controls Ltd
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 CECIL ROY EVANS, Servomex Controls Ltd filed Critical CECIL ROY EVANS
Priority to GB2447760A priority Critical patent/GB979767A/en
Publication of GB979767A publication Critical patent/GB979767A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/24—Frequency- independent attenuators

Landscapes

  • Ignition Installations For Internal Combustion Engines (AREA)
  • Networks Using Active Elements (AREA)

Abstract

979,767. Resistance networks. SERVOMEX CONTROLS Ltd., and C. R. EVANS. July 11, 1961 [July 13, 1960], No. 24477/60. Heading H3U. A resistance network comprises a potentiometer R connected across a voltage source E 1 and associated with a variable output circuit R L , Rpv<SP>1</SP>, Rpo<SP>1</SP> which ensures linearity between the potential difference at the output terminals 3, 4 and the setting of the potentiometer. It is shown in the Specification that compensation for the effect of load current may be achieved by making R L much greater than R on the shunt circuit Rpo<SP>1</SP>, Rpv<SP>1</SP>, and by arranging that the shunt circuit has a minimum value at the two extreme settings of the potentiometer and a maximum value at the mid-setting. To this end, the shunt circuit comprises a second potentiometer Rpv<SP>1</SP> in series with a variable resistor Rpo<SP>1</SP>. The two potentiometers R, Rpv<SP>1</SP> may be of the rotary type and may be ganged together.
GB2447760A 1960-07-13 1960-07-13 Improvements in or relating to variable electrical resistance networks Expired GB979767A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2447760A GB979767A (en) 1960-07-13 1960-07-13 Improvements in or relating to variable electrical resistance networks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2447760A GB979767A (en) 1960-07-13 1960-07-13 Improvements in or relating to variable electrical resistance networks

Publications (1)

Publication Number Publication Date
GB979767A true GB979767A (en) 1965-01-06

Family

ID=10212307

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2447760A Expired GB979767A (en) 1960-07-13 1960-07-13 Improvements in or relating to variable electrical resistance networks

Country Status (1)

Country Link
GB (1) GB979767A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2134738A (en) * 1983-02-07 1984-08-15 Tektronix Inc Compensation of a high voltage attenuator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2134738A (en) * 1983-02-07 1984-08-15 Tektronix Inc Compensation of a high voltage attenuator

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