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| Number | Title | Issue Date |
| 7231325 | System for evaluating a sensor signal The inventive device for evaluating the sensor signal includes the provider for providing the sensor signal, the processor for processing the sensor signal and for providing an information signal comprising information regarding the amplitude course of the sensor si... | 06/12/2007 |
| 6946910 | Configurable feedback path in an amplitude control system A configurable feedback path is included in an amplitude control system having a signal source and an amplitude controller, and provides accurate tracking between a signal provided at a test port and a reference signal, whether or not the configurable feedback path ... | 09/20/2005 |
| 5541482 | Electrodeless discharge lamp including impedance matching and filter network An impedance matching and filter network is disclosed. The network performs two preselected impedance transformations and provides a filtering function to attenuate harmonics of an electrical signal delivered at an input of the network. The network may ad... | 07/30/1996 |
| 5535247 | Frequency modifier for a transmitter A transmitter has an oscillator (101, 201, 303, 401, 501) that operates at frequency k multiplied by fc, thus the oscillator (101, 201, 303, 401, 501) outputs a signal at an output frequency, kfc. Coupled to the oscillator (101, 201,... | 07/09/1996 |
| 5402084 | Coupling circuit A circuit for coupling a signal source producing a signal having a given voltage waveform to a load having two ends, the circuit being composed of: a load voltage control unit connectable between the signal source and one end of the load for producing acr... | 03/28/1995 |
| 5107389 | Circuit for limiting temperature without distortion in audio power amplifiers A circuit for limiting temperature without distortion in audio power amplifiers, comprising a temperature sensor for sensing the temperature in an audio power amplifier, and a variable-gain amplifier connected ahead of the audio power amplifier circuit an... | 04/21/1992 |
| 5030921 | Cascaded cold cathode field emission devices Field emission devices are cascaded in multiple stages, such that certain structures function as electrodes for field emission devices of differing stages.... | 07/09/1991 |
| 4720701 | System with enhanced signal detection and discrimination with saturable magnetic marker An antipilferage system is provided with an improved signal processing system to prevent false alarms. This signal processing involves singly or in combination the improvements of a slew rate limited amplifier, which prevents impulse noise from ringing or... | 01/19/1988 |
| 4481477 | Method and apparatus for the real-time measurement of the small signal gain of an amplifier A method and apparatus for measuring the small signal gain of an amplifier. Each amplifier responds, in operation, to a small signal input. The small signal input varies substantially linearly over a field time interval. A small bias signal is added to th... | 11/06/1984 |
| 4433306 | Audio-frequency power amplifier A BTL power amplifier comprises main and inverse amplifier units having the same constitution but producing outputs inverted from each other. A low impedance load is directly connected between the output ports of the main and inverse amplifier units. The ... | 02/21/1984 |
| 4398159 | Switch mode - class B power amplifier An input signal is applied to the inverting input of a class B amplifier and to the input of a limiter circuit. The square wave signal from the limiter is applied to the input of a switching amplifier which drives this amplifier between V and ground at th... | 08/09/1983 |
| 4392245 | Radio transmitter having an output power control circuit A radio transmitter has an output power control circuit including a power amplifier, a directional coupler coupled to the power amplifier, a detector of the forward power of the directional coupler, a generator of a difference voltage between the output v... | 07/05/1983 |
| 4149124 | Thermal protection of amplifiers A method and circuit for protecting the output stage of an amplifier from thermal overload. A normally-open, temperature sensitive switch is thermally coupled to the transistors in the output stage and electrically connected across a portion of the feedba... | 04/10/1979 |
| 4079335 | Adaptive level control for electro-acousto device A circuit for providing adaptive level control in a sound-recording device. A feed-back signal drives a variable attenuator which controls the input level to the audio amplifier stage. Means are provided for preventing voltage spikes at turn-on from adver... | 03/14/1978 |
| 3986048 | Non-linear amplifier A non-linear amplifier is disclosed including an amplifying transistor for amplifying an input signal, an output amplified signal being derived from the amplifying transistor. A series of PN junctions is provided to supply a determined bias voltage to the... | 10/12/1976 |
