NL167541B - DEVICE WITH A VARIABLE CAPACITY. - Google Patents

DEVICE WITH A VARIABLE CAPACITY.

Info

Publication number
NL167541B
NL167541B NL7105732.A NL7105732A NL167541B NL 167541 B NL167541 B NL 167541B NL 7105732 A NL7105732 A NL 7105732A NL 167541 B NL167541 B NL 167541B
Authority
NL
Netherlands
Prior art keywords
variable capacity
variable
capacity
Prior art date
Application number
NL7105732.A
Other languages
Dutch (nl)
Other versions
NL167541C (en
NL7105732A (en
Original Assignee
Sprague Electric Co
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 Sprague Electric Co filed Critical Sprague Electric Co
Publication of NL7105732A publication Critical patent/NL7105732A/xx
Publication of NL167541B publication Critical patent/NL167541B/en
Application granted granted Critical
Publication of NL167541C publication Critical patent/NL167541C/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/02—Manually-operated control
    • H03G5/04—Manually-operated control in untuned amplifiers
    • H03G5/10—Manually-operated control in untuned amplifiers having semiconductor devices
    • H03G5/12—Manually-operated control in untuned amplifiers having semiconductor devices incorporating negative feedback
NL7105732.A 1970-05-14 1971-04-27 DEVICE WITH A VARIABLE CAPACITY. NL167541C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3708370A 1970-05-14 1970-05-14

Publications (3)

Publication Number Publication Date
NL7105732A NL7105732A (en) 1971-11-16
NL167541B true NL167541B (en) 1981-07-16
NL167541C NL167541C (en) 1981-12-16

Family

ID=21892360

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7105732.A NL167541C (en) 1970-05-14 1971-04-27 DEVICE WITH A VARIABLE CAPACITY.

Country Status (5)

Country Link
US (1) US3668478A (en)
DE (1) DE2053618C3 (en)
FR (1) FR2093498A5 (en)
GB (1) GB1307665A (en)
NL (1) NL167541C (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR900002640Y1 (en) * 1986-02-10 1990-03-31 알프스 덴기 가부시기 가이샤 Variable resistor
US6054908A (en) * 1997-12-12 2000-04-25 Trw Inc. Variable bandwidth filter
US6324066B1 (en) * 1999-07-19 2001-11-27 Motorola, Inc. Surface mountable electronic device
JP5066982B2 (en) * 2007-04-02 2012-11-07 ソニー株式会社 Control device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2591705A (en) * 1949-01-18 1952-04-08 Herlec Corp Variable capacitor
US2637778A (en) * 1950-10-20 1953-05-05 Sprague Electric Co Tone compensated volume control
US2790970A (en) * 1951-01-04 1957-04-30 Sprague Electric Co Audio frequency signal transfer control circuits
US3426267A (en) * 1968-01-18 1969-02-04 Vitramon Inc Variable resistor-capacitor unit

Also Published As

Publication number Publication date
US3668478A (en) 1972-06-06
DE2053618B2 (en) 1980-03-06
DE2053618C3 (en) 1980-11-13
NL167541C (en) 1981-12-16
GB1307665A (en) 1973-02-21
FR2093498A5 (en) 1972-01-28
NL7105732A (en) 1971-11-16
DE2053618A1 (en) 1971-12-02

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Legal Events

Date Code Title Description
V1 Lapsed because of non-payment of the annual fee