Patents
Sitemap › H03 - Basic electronic circuitry › H03H - Impedance networks, e.g. resonant circuits; Resonators › H03H 11 - Networks using active elements
Patents for H03H 11 - Networks using active elements (9,098)
11/1982
11/30/1982US4361894 Band-pass filter circuit
11/25/1982WO1982004167A1 Band-pass filter and gain stage
11/23/1982US4360747 Voltage controlled subcarrier phase shifter
11/17/1982EP0064905A1 Elektronically controlled phase-shifting device using a field effect transistor with a long gate, and circuit using such a device
11/16/1982US4359609 Circuit with feedback for controlling the impedance thereof
11/16/1982US4359600 Programable low impedance digital attenuators
11/16/1982CA1135801A1 Quadrature transposition stage
11/09/1982US4358842 Record player
11/09/1982US4358741 Micro time and phase stepper
11/09/1982CA1135361A1 Procedure and device for the nonlinear equalization on sequences of digital signals
11/03/1982EP0063602A1 Filter system for modelling a sound channel and speech synthesizer using the same
10/1982
10/26/1982US4356451 Active band pass filter
10/26/1982US4356449 Logarithmic attenuating circuit
10/19/1982CA1133832A1 Artificial reverberation apparatus
10/12/1982US4354159 Prescription attenuator having cascaded L-pad sections
10/12/1982US4354151 Voltage divider circuits
10/05/1982US4353044 Switched-capacitor filter circuit having at least one simulated inductor and having a resonance frequency which is one-sixth of the sampling frequency
09/1982
09/28/1982US4352074 Phase-locked loop filter
09/22/1982EP0060325A1 Circuit for the conversion of an input signal, comprising harmonics in a certain frequency domain in an in-phase and/or amplitude-adjustable sinusoidal output signal
09/21/1982US4351060 Automatic, digitally synthesized matching line terminating impedance
09/21/1982US4350964 Impedance generator circuit
09/21/1982US4350956 Level shifting and filtering circuit
09/21/1982CA1132210A1 Equalizing network
09/15/1982EP0059802A1 Delay circuit with integrated insulated-layer field-effect transistor for digital signals, and application of the same to colour television receivers
08/1982
08/25/1982EP0058504A2 Method of constructing a delay circuit in a master slice IC
07/1982
07/27/1982CA1128616A1 Filter circuit
07/20/1982US4340868 Current mode biquadratic active filter
07/13/1982US4339729 Analog integrated filter circuit
07/13/1982US4339677 Electrically variable impedance circuit with feedback compensation
07/13/1982US4339672 Delay circuit constituted by MISFETs
07/08/1982WO1982002302A1 Variable capacitance circuit
07/06/1982US4338582 Electronically tunable resonator circuit
07/06/1982US4338532 Integrated delay circuits
07/06/1982US4338530 Low-pass filter for low-frequency signals
06/1982
06/24/1982WO1982002109A1 Method and system for modelling a sound channel and speech synthesizer using the same
06/23/1982EP0054323A2 Clock pulse phase shifter
06/22/1982US4336513 Hum reduction circuit
06/22/1982US4336501 Frequency characteristic adjusting circuit
06/22/1982US4336423 Device for increasing the parallel inductance of a transformer
06/22/1982CA1126355A1 Delay network comprising a chain of all-pass sections
06/15/1982US4335359 Monolithically integrable lowpass filter circuit
06/15/1982CA1125914A1 Line-addressable random-access memory decoupling apparatus
06/01/1982US4333157 Switched-capacitor floating-inductor simulation circuit
06/01/1982CA1124653A1 Frequency characteristic-adjusting apparatus
05/1982
05/26/1982EP0052256A1 Electronic device for recording reactive power and use of such a device
05/25/1982US4331944 Switched-capacitor resistor simulation circuits
05/25/1982CA1124403A1 Digital ccd arrangement
05/04/1982CA1123131A1 Transformerless trunk circuit
04/1982
04/27/1982US4327383 Read circuit for a floppy disk drive
04/27/1982US4327373 Composite color signal processing circuit
04/27/1982US4327335 Electronic low-pass filter circuit with an adjustable long time base
04/27/1982US4327250 Dynamic speaker equalizer
04/21/1982EP0049997A2 Filter circuit suitable for being fabricated into integrated circuit
04/20/1982US4326172 Tunable active high-pass filter
04/07/1982EP0048937A1 Circuit arrangement for reading data on a magnetic recording medium
04/06/1982US4323798 Fast operating switchable operational amplifier driven circuits
03/1982
03/31/1982EP0048260A1 Analog integrated filter circuit
03/30/1982US4322641 Noise reduction system
03/23/1982US4321431 Trunk circuit with single coupling transformer
03/17/1982EP0047476A1 Equalizer for intelligence signals
03/16/1982US4320354 Fail-safe band-pass circuit
03/09/1982US4319184 Remote control precision step attenuator
03/09/1982US4319143 Impedance converting circuit
03/09/1982CA1119681A1 Single amplifier frequency dependent negative resistor
03/03/1982EP0046588A1 Method of and circuit arrangement for supplying current to a two-wire telecommunications line
03/02/1982US4318054 Input circuit of audio amplifier
03/02/1982US4318048 Phase shifter control circuit
03/02/1982US4318040 Power supply circuit
03/02/1982CA1119261A1 Filter circuit
02/1982
02/16/1982US4316060 Equalizing system
02/09/1982US4315229 Bandstop filters
02/02/1982US4314378 Antenna low-noise Q spoiling circuit
01/1982
01/12/1982US4310787 Phase-control device for synchronous motors
01/06/1982EP0043048A2 Comb filter
01/05/1982US4309649 Phase synchronizer
01/05/1982CA1115787A1 Digital signal phase shifting system
12/1981
12/22/1981US4306695 Non-linear filter
12/15/1981US4306200 Selective amplifier
12/15/1981US4306198 Filter circuit
12/10/1981WO1981003566A1 Artificial reverberation generator
12/09/1981EP0041472A1 Circuit arrangement having an amplifier with output coupling transformer
12/01/1981US4303891 Monolithic integrated circuit with frequency dependent amplification
12/01/1981US4303890 Circuit arrangement for transferring a signal
12/01/1981US4303889 Filter circuit
11/1981
11/26/1981WO1981003405A1 Current mode biquadratic active filter
11/18/1981EP0039917A2 Circuit arrangement for damping power oscillations in power systems
11/17/1981US4301420 Frequency characteristic-adjusting apparatus
11/03/1981US4298811 MOS Voltage divider
10/1981
10/27/1981US4297641 Serrodyning system employing an adjustable phase shifting circuit
10/20/1981US4296392 Switched capacitor bilinear resistors
10/15/1981WO1981002957A1 Audio echo circuits
10/13/1981US4295098 Digitally adjustable phase shifting circuit
10/13/1981US4295089 Methods of and apparatus for generating reference voltages
10/06/1981US4293820 Positive feedback biquad filter
10/01/1981WO1981002819A1 Analog integrated filter circuit
09/1981
09/29/1981US4292599 Low pass active filter
09/29/1981US4292468 Frequency selection circuit
09/22/1981US4291276 Equalizer amplifier
09/16/1981EP0035591A1 Active low frequency bandpass filter
09/15/1981US4290036 Filter circuit arrangement
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