GB1345536A - Attenuators - Google Patents

Attenuators

Info

Publication number
GB1345536A
GB1345536A GB1345536DA GB1345536A GB 1345536 A GB1345536 A GB 1345536A GB 1345536D A GB1345536D A GB 1345536DA GB 1345536 A GB1345536 A GB 1345536A
Authority
GB
United Kingdom
Prior art keywords
terminals
attenuator
values
resistance
amplifier
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
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.)
G&E Bradley Ltd
Original Assignee
G&E Bradley 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 G&E Bradley Ltd filed Critical G&E Bradley Ltd
Publication of GB1345536A publication Critical patent/GB1345536A/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

  • Amplifiers (AREA)

Abstract

1345536 Attenuators G & E BRADLEY Ltd 29 June 1971 [6 July 1970] 32714/70 Heading H3U An attenuator having at least two stages 27- 30; 31-34 having different time constants, mutually connected at terminals 23, 24 and having input terminals 21, 22 and output terminals 25, 26, includes variable capacitors 27, 31 whose values are set by observing, with an oscilloscope, the response of the attenuator to square wave pulses of long duration, repeatedly applied, until the voltage between terminals 25, 26 varies in direct proportion to that between terminals 21, 22, see Figs. 3 and 4 (not shown). For use in push-pull circuits, terminal pairs 22, 24; 24, 26 respectively are each interconnected by a resistor shunted by a variable capacitor, the respective resistors having values R 28 , R 32 respectively, the capacitors having greatest values equal to those of 27, 31, respectively. In use the resistance and capacitance of the attenuator output stage may comprise the input capacitance and resistance of an amplifier. The attenuator may be included in an amplifier possibly in a cathode-ray oscilloscope. Formulae interrelating the circuit components, when setting is completed, are given. The stages preferably have different attenuation ratios.
GB1345536D 1971-07-29 1971-07-29 Attenuators Expired GB1345536A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3271470 1971-07-29

Publications (1)

Publication Number Publication Date
GB1345536A true GB1345536A (en) 1974-01-30

Family

ID=10342924

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1345536D Expired GB1345536A (en) 1971-07-29 1971-07-29 Attenuators

Country Status (1)

Country Link
GB (1) GB1345536A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2534090A1 (en) * 1982-10-04 1984-04-06 Tektronix Inc METHOD AND APPARATUS FOR COMPENSATION FOR AN RC ATTENUATOR

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2534090A1 (en) * 1982-10-04 1984-04-06 Tektronix Inc METHOD AND APPARATUS FOR COMPENSATION FOR AN RC ATTENUATOR

Similar Documents

Publication Publication Date Title
US3222609A (en) Wide-band automatic gain-controlled amplifier
GB1410380A (en) Tone control circuit
US3786363A (en) Voltage-controlled low-pass filter
US4087737A (en) Phase shifting circuit
GB1345536A (en) Attenuators
GB1347127A (en) Filter circuits
US3500223A (en) Variable gain amplifier circuits
US3201703A (en) Wave sampling apparatus employing common potential switch
SE7710588L (en) COUPLING TO MODIFY A DYNAMIC RANGE OF INPUT SIGNAL
SU430484A1 (en) ACTIVE REGIONAL RC-FILTER
GB1143357A (en) Improvements relating to variable gain networks
GB1252874A (en)
GB1297058A (en)
GB1011619A (en) Improvements in or relating to frequency translating circuit arrangements
US2969509A (en) Minimum-phase wave transmission network with maximally flat delay
US3150326A (en) Variolosser circuits having identical frequency selectivity at all loss settings
US3628161A (en) Electronic sampling and hold circuit
US3192402A (en) Delay network
US2978656A (en) Interference filter
US4084111A (en) Apparatus for the digital control of analog signal
ES326860A1 (en) Demonstrated filter device de muesca. (Machine-translation by Google Translate, not legally binding)
DE2159738B2 (en) Amplifying circuit for pulse signals using a reflective delay line
FR2331912A1 (en) Active bandpass filter of second order - with independently controlled parameters for modulated telephone signals
GB1190239A (en) Improvements in or relating to Electric Circuits Suitable for Use as Voltage Regulators or Signal Attenuators
JPS562673A (en) Optical receiver circuit

Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees