Class / Patent application number | Description | Number of patent applications / Date published |
327559000 | Highpass | 7 |
20080278229 | Active Compensation Filter - An active compensation filter for the application in the electric power supply in a land vehicle, which comprises a high-pass filter which is to be coupled with a supply voltage line which carries a supply voltage, in order to detect frequency and amplitude of interference voltage components of the supply voltage. A signal amplifier which is connected in series with the high-pass filter amplifies the detected interference voltage components and supplies them to a coupling element as output signals, which is connected in series with the signal amplifier and comprises a primary side and a secondary side. The primary side is fed with the output signals of the signal amplifier and the secondary side is looped into the supply voltage line. | 11-13-2008 |
20080297241 | APPLICATION-SPECIFIC INTEGRATED CIRCUIT WITH AUTOMATIC TIME-CONSTANT MATCHING - An application-specific integrated circuit (CS) comprises a first analog stage (E | 12-04-2008 |
20090058518 | HIGH-PASS FILTER - A capacitor has one end receiving an input signal and the other end outputting an output signal. A resistor circuit, connected between a power source and the other end of the capacitor, functions as a resistor. The resistor circuit includes a PNP transistor having a base connected to the other end of the capacitor and an NPN transistor having a base connected to the other end of the capacitor. A differential amplifier supplies complementary current to the PNP transistor and the NPN transistor. The differential amplifier receives, as negative feedback, the output signal from the other end of the differential amplifier. | 03-05-2009 |
20090121786 | SEMICONDUCTOR INTEGRATED CIRCUIT - A semiconductor integrated circuit can include a first voltage pad, a second voltage pad, and a voltage stabilizing unit that is connected between the first voltage pad and the second voltage pad. The first voltage pad can be connected to a first internal circuit, and the second voltage pad can be connected to a second internal circuit. | 05-14-2009 |
20130043938 | LOW VOLTAGE ANALOG SWITCH - A switch for an analog signal may include a main MOS transistor whose source forms an input terminal of the switch and whose drain forms an output terminal of the switch, a capacitor having a first terminal permanently connected to the source of the main transistor, a circuit for charging the capacitor, and a first auxiliary transistor configured to connect the second terminal of the capacitor to the gate of the main transistor in response to a control signal. The charge circuit may include a resistor permanently connecting the second terminal of the capacitor to a power supply line. The capacitor and the resistor may form a high-pass filter having a cutoff frequency lower than the frequency of the analog signal. | 02-21-2013 |
20130154726 | SECOND ORDER ACTIVE HIGH-PASS FILTER WITH CROSS-COUPLED FEEDBACK FOR Q ENHANCEMENT - An apparatus comprising an input circuit, a cross coupled active circuit and an output circuit. The input circuit may be configured to generate a first portion of an intermediate signal in response to an input signal. The cross coupled active circuit may be configured to generate a second portion of the intermediate signal in response to a feedback of an output signal. The output circuit may be configured to generate the output signal in response to the intermediate signal. The output signal may pass frequencies above a target frequency. | 06-20-2013 |
20160254799 | TUNER CIRCUIT | 09-01-2016 |