IPC-Stelle: H03J 3/20 [Version 2006.01]

SymbolTypTitel
HSKSECTION H — ELECTRICITY
H03KLBASIC ELECTRONIC CIRCUITRY
H03JUKLTUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS (indicating arrangements for measuring G01D; measuring, testing G01R; remote-control in general G05, G08; automatic control or stabilisation of generators H03L)
H03J 1/00HGRDetails of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general (machine elements in general F16; coupling of knobs to shafts F16D) [3]
H03J 1/02UGR1
.Indicating arrangements
H03J 1/04UGR2
. .with optical indicating means
H03J 1/06UGR1
.Driving or adjusting arrangements; combined with other driving or adjusting arrangements, e.g. of gain control
H03J 1/08UGR2
. .Toothed-gear drive; Worm drive
H03J 1/10UGR2
. .Rope drive; Chain drive
H03J 1/12UGR2
. .Friction drive
H03J 1/14UGR2
. .Special arrangements for fine and coarse tuning
H03J 1/16UGR2
. .Single control means independently performing two or more functions
H03J 1/18UGR1
.Control by auxiliary power
H03J 1/20UGR2
. .the auxiliary power being switched on as long as controlling current is switched on
H03J 1/22UGR2
. .with stepping arrangements actuated by control pulses
H03J 3/00HGRContinuous tuning (H03J 7/00, H03J 9/00 take precedence; combination of continuous and discontinuous tuning other than for bandspreading H03J 5/00) [3]
H03J 3/02UGR1
.Details
H03J 3/04UGR2
. .Arrangements for compensating for variations of physical values, e.g. temperature (automatic control of ambient conditions G05D)
H03J 3/06UGR2
. .Arrangements for obtaining constant bandwidth or gain throughout tuning range or ranges (automatic gain control H03G)
H03J 3/08UGR3
. . .by varying a second parameter simultaneously with the tuning, e.g. coupling bandpass filter
H03J 3/10UGR2
. .Circuit arrangements for fine tuning, e.g. bandspreading
H03J 3/12UGR2
. .Electrically-operated arrangements for indicating correct tuning
H03J 3/14UGR3
. . .Visual indication, e.g. magic eye
H03J 3/16UGR2
. .Tuning without displacement of reactive element, e.g. by varying permeability
H03J 3/18UGR3
. . .by discharge tube or semiconductor device simulating variable reactance
H03J 3/20UGR1
.of single resonant circuit by varying inductance only or capacitance only
H03J 3/22UGR1
.of single resonant circuit by varying inductance and capacitance simultaneously
H03J 3/24UGR1
.of more than one resonant circuit simultaneously, the circuits being tuned to substantially the same frequency, e.g. for single-knob tuning
H03J 3/26UGR2
. .the circuits being coupled so as to form a bandpass filter
H03J 3/28UGR1
.of more than one resonant circuit simultaneously, the tuning frequencies of the circuits having a substantially constant difference throughout the tuning range
H03J 3/30UGR2
. .Arrangements for ensuring tracking with variable inductors
H03J 3/32UGR2
. .Arrangements for ensuring tracking with variable capacitors
H03J 5/00HGRDiscontinuous 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 (H03J 7/00, H03J 9/00 take precedence; for bandspreading H03J 3/10) [3]
H03J 5/02UGR1
.with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
H03J 5/04UGR2
. .operated by hand
H03J 5/06UGR3
. . .Settings determined by single indexing means with snap action
H03J 5/08UGR3
. . .Settings determined by a number of separately-actuated positioning means
H03J 5/10UGR3
. . .Settings determined by a number of positioning means mounted on a common support, which is adjustable to desired positions, a different positioning means being in operation in each position
H03J 5/12UGR3
. . .Settings determined by a number of separately-actuated driving means which adjust the tuning element directly to desired settings
H03J 5/14UGR2
. .operated by auxiliary power
H03J 5/16UGR3
. . .Settings determined by a number of separate positioning means actuated by hand
H03J 5/18UGR3
. . .Settings determined by a number of separate positioning means actuated by electromagnets
H03J 5/20UGR3
. . .Settings determined by a number of positioning means actuated by a second means adjustable to different positions by the same or by a second auxiliary power
H03J 5/22UGR3
. . .Settings determined by a number of separately actuated driving means which adjust the tuning element directly to desired settings
H03J 5/24UGR1
.with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection, for television channel selection (switches in general H01H)
H03J 5/26UGR2
. .operated by hand
H03J 5/28UGR3
. . .Tuning circuits or elements supported on a revolving member with contacts arranged in a plane perpendicular to the axis
H03J 5/30UGR3
. . .Tuning circuits or elements supported on a revolving member with contacts arranged in lines parallel to the axis
H03J 5/32UGR3
. . .Stationary tuning circuits or elements selected by push-button
H03J 7/00HGRAutomatic frequency control; Automatic scanning over a band of frequencies [3]
H03J 7/02UGR1
.Automatic frequency control (H03J 7/18 takes precedence; automatic tuning control for television receivers H04N 5/50) [3]
H03J 7/04UGR2
. .where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant [3]
H03J 7/06UGR3
. . .using counters or frequency dividers [3]
H03J 7/08UGR3
. . .using varactors, i.e. voltage variable reactive diodes (H03J 7/06 takes precedence) [3]
H03J 7/10UGR4
. . . .Modification of automatic frequency control sensitivity or linearising automatic frequency control operation [3]
H03J 7/12UGR4
. . . .Combination of automatic frequency control voltage with stabilised varactor supply voltage [3]
H03J 7/14UGR3
. . .Controlling the magnetic state of inductor cores (H03J 7/06 takes precedence) [3]
H03J 7/16UGR2
. .where the frequency control is accomplished by mechanical means, e.g. by a motor [3]
H03J 7/18UGR1
.Automatic scanning over a band of frequencies [3]
H03J 7/20UGR2
. .where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element [3]
H03J 7/22UGR3
. . .in which an automatic frequency control circuit is brought into action after the scanning action has been stopped (H03J 7/24 takes precedence) [3]
H03J 7/24UGR3
. . .using varactors, i.e. voltage variable reactive diodes (H03J 7/28 takes precedence) [3]
H03J 7/26UGR4
. . . .in which an automatic frequency control circuit is brought into action after the scanning action has been stopped [3]
H03J 7/28UGR3
. . .using counters or frequency dividers [3]
H03J 7/30UGR2
. .where the scanning is accomplished by mechanical means, e.g. by a motor [3]
H03J 7/32UGR2
. .with simultaneous display of received frequencies, e.g. panoramic receivers [3]
H03J 9/00HGRRemote-control of tuned circuits; Combined remote-control of tuning and other functions, e.g. brightness, amplification (mechanical remote-control arrangements H03J 1/00) [3]
H03J 9/02UGR1
.using radio transmission; using near-field transmission [3]
H03J 9/04UGR1
.using ultrasonic, sonic or infrasonic waves [3]
H03J 9/06UGR1
.using electromagnetic waves other than radio waves, e.g. light [3]