Patents for H03J 3 - Continuous tuning (1,764)
08/1979
08/21/1979CA1060956A1 Yig tuned mixer
07/1979
07/17/1979CA1058747A1 Input circuit of vhf television set tuner
07/10/1979US4160964 High frequency wide band resonant circuit
07/03/1979CA1057828A1 Temperature compensated surface acoustic wave oscillator
05/1979
05/29/1979US4156849 Display device in electrical equipment
05/29/1979CA1055625A1 Indicating device for tuning apparatus
05/29/1979CA1055624A1 Resonant circuit using variable capacitance diode
05/22/1979CA1055173A1 Radio frequency tuner
05/08/1979US4153887 Electrically tunable bandpass filter
05/08/1979US4153849 Circuit for normalizing devices having current-controlled frequency response to predetermined I-F characteristic
04/1979
04/17/1979CA1052920A1 Voltage generating system
03/1979
03/27/1979CA1051567A1 Tuning system for am/fm receivers
03/20/1979US4145659 UHF electronic tuner
03/13/1979CA1050656A1 Compensation of oscillators and amplifiers with tuned circuits for variations in frequency response, caused by changes in internal capacitance due to agc or temperature variations
01/1979
01/30/1979US4137502 Radio-receiver or tuner provided with solid state memorizing means for a multiplicity of reception frequencies
01/23/1979CA1047181A1 Indicating circuit for an fm stereophonic signal receiver
01/16/1979US4135158 Universal automotive electronic radio
12/1978
12/05/1978US4128810 Signal level indicator driving circuit
11/1978
11/07/1978CA1042120A2 Electronic tuner with delinearized tuning voltage
10/1978
10/31/1978US4123724 Communication equipment
10/17/1978CA1040766A1 Tuner with digitally coded indicia
09/1978
09/05/1978US4112371 Muting and tuning indicator system for an FM receiver
08/1978
08/22/1978US4109206 Signal strength meter drive circuit
08/15/1978US4107624 Automatic frequency-tracking circuit
07/1978
07/25/1978US4103240 Fm tuning indicator
06/1978
06/27/1978US4097829 Thermoelectric compensation for voltage control devices
03/1978
03/28/1978US4081840 Dual function acoustic switch
01/1978
01/24/1978US4070628 Radio receiver with selective plural band reception
11/1977
11/22/1977US4059802 Input level display circuit for receivers
11/22/1977US4059791 Voltage supply circuit for voltage-dependent capacitor diode tuning
11/15/1977US4058772 Method of and apparatus for converting a plural-bit digital signal to a pulse width modulated signal
10/1977
10/25/1977US4055822 Tuning circuit arrangement
10/18/1977US4054853 UHF television tuner with electrical fine tuning
09/1977
09/13/1977US4048598 Uhf tuning circuit utilizing a varactor diode
09/13/1977US4048597 Planar printed circuit board arrangement useful in the uhf portion of a television tuner
09/06/1977US4047112 Channel selector employing variable capacitance elements for tuning
09/06/1977US4047111 Tuning system for AM/FM receivers
08/1977
08/09/1977US4041399 Semiconductor varactor device and electronic tuner using same
08/09/1977US4040719 Frequency indicator for receiving devices
08/02/1977US4039982 Coaxial cavity radio frequency tuning circuit having a toroidal-shaped electrode to effect tuning
08/02/1977US4039981 Variable impedance circuit
06/1977
06/21/1977US4031475 Electronic channel selecting apparatus
05/1977
05/24/1977US4025882 UHF tuner having frequency setting fine toned by varying characteristic impedance of resonant line
05/17/1977US4024477 Received signal frequency indicating system
05/10/1977US4023106 Input circuit of VHF television set tuner
04/1977
04/26/1977US4020420 Electronic channel selector
03/1977
03/29/1977US4015192 Voltage generating system
03/08/1977US4011526 Temperature compensated surface acoustic wave oscillator
01/1977
01/11/1977US4003009 Resonant circuit using variable capacitance diode
12/1976
12/07/1976US3996540 Indicating device for tuning apparatus
10/1976
10/19/1976US3987401 Indicating system using multicolor light emitting diodes
09/1976
09/14/1976US3980957 Circuit arrangement for tuning and range or band switching of an RF resonant circuit
08/1976
08/03/1976US3973204 YIG tuned mixer
07/1976
07/20/1976US3970974 Trimmer for a tuned UHF line
07/06/1976US3968447 Method of amplitude-frequency conversion and a converter which operates in accordance with said method
06/1976
06/08/1976US3962641 Tuning apparatus
05/1976
05/25/1976US3959729 Electro-optic tuning indicator
05/11/1976US3956594 Indicating circuit for an FM stereophonic signal receiver
04/1976
04/27/1976US3953800 Tuning indicator for a radio frequency receiver
04/27/1976US3953771 Multiple trimmer capacitor, particularly for adjustment of crystal oscillators
04/13/1976US3950702 Circuits for detecting trigger signals for use in synthesizing type receivers
04/06/1976US3949308 Varactor control unit using Q variable inductances
01/1976
01/20/1976US3934191 Circuit arrangement for generating a stabilized direct voltage with superposition of a control voltage
01/13/1976US3932814 Heterodyne receiver system
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