BE639126A - - Google Patents

Info

Publication number
BE639126A
BE639126A BE639126DA BE639126A BE 639126 A BE639126 A BE 639126A BE 639126D A BE639126D A BE 639126DA BE 639126 A BE639126 A BE 639126A
Authority
BE
Belgium
Prior art keywords
voltage
potentiometer
source
adjustable
ranges
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE639126A publication Critical patent/BE639126A/fr

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03JTUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00Continuous tuning
    • H03J3/24Continuous tuning of more than one resonant circuit simultaneously, the circuits being tuned to substantially the same frequency, e.g. for single-knob tuning
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03JTUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00Continuous tuning
    • H03J3/28Continuous tuning of more than one resonant circuit simultaneously, the tuning frequencies of the circuits having a substantially constant difference throughout the tuning range
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03JTUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/02Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
    • H03J5/0209Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, by selecting the corresponding analogue value between a set of non preset values

Landscapes

  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
BE639126D BE639126A (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL300875T

Publications (1)

Publication Number Publication Date
BE639126A true BE639126A (sv)

Family

ID=19783259

Family Applications (1)

Application Number Title Priority Date Filing Date
BE639126D BE639126A (sv)

Country Status (2)

Country Link
BE (1) BE639126A (sv)
NL (1) NL300875A (sv)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7811229A (nl) * 1978-11-14 1980-05-19 Philips Nv Verzwakkerinrichting bevattende een cascadeschakeling van een stappenverzwakker en een regelbare spannings- deler, alsmede een besturingsschakeling voor de rege- ling daarvan.

Also Published As

Publication number Publication date
NL300875A (sv) 1900-01-01

Similar Documents

Publication Publication Date Title
US6307442B1 (en) Enhanced LC filter with tunable Q
FR2578124A1 (fr) Circuit d'accord pour un tuner a plusieurs bandes
US5489873A (en) Active low-pass filter
FR2473818A1 (fr) Recepteur superheterodyne double
US2137787A (en) Method and apparatus for electrical measurements
US7301392B2 (en) Tunable resonator for use in active-RC continuous-time filters
FR2578121A1 (fr) Oscillateur local multibande
BE639126A (sv)
CA1159915A (en) Adjustable and elective electrical filters
US2135587A (en) Variable ratio arm bridge
DE2753629A1 (de) Schaltungsanordnung fuer spannungsgesteuerte oszillatoren
US9401695B2 (en) Immittance conversion circuit and filter
US2594091A (en) Piezoelectric crystal frequency discriminator
US3227967A (en) Arrangement for the electronically controllable wobbling of an oscillatory circuit
US3074021A (en) Crystal discriminator
US20050122660A1 (en) Variable capacitor
US2590753A (en) Reactance tube circuit
US4382233A (en) Multiple-feedback path filter
US3586986A (en) Frequency discriminator
US3430163A (en) Bandpass filter having variable bandwidth but constant midband response and variable loading circuit for the same
US2135953A (en) Variable resistance bridge circuit
US2846643A (en) Compensated electrical integrator
KR960002190Y1 (ko) 튜너의 발진회로
US3251008A (en) Voltage sensitive capacitor-tuned oscillator with automatic frequency control
AT254329B (de) Meßverstärker zur Messung elektrischer Ladungen