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| Number | Title | Issue Date |
| 7372369 | Monitoring of alarm system wiring A supervisory method and apparatus provide for detection of “partial fault” conditions such as a relatively high series impedance in the wiring, or a relatively low parallel impedance across the wiring. A non-linear element, such as a semiconductor diode, can be... | 05/13/2008 |
| 7268606 | High-frequency signal switching An electronic signal processing apparatus has a signal switch with a first and a second transistor of normally-on type, having main current channels coupled between an internal node and a switch input and output, respectively. A diode provides a switchable signal co... | 09/11/2007 |
| 7190207 | One way conductor A one way conductor includes a MOSFET and a driving device. The MOSFET has a source and a drain respectively serving a positive end P and a negative end N of the one way conductor. The driving device including a BJT differential amplifier detects a voltage differenc... | 03/13/2007 |
| 7018095 | Circuit for sensing on-die temperature at multiple locations A circuit for sensing on-die temperature at multiple locations using a minimum number of pins is described. Thermal diodes coupled to pins are placed on a die to measure the temperature at various die locations. Voltage is applied to the pins to determine the temper... | 03/28/2006 |
| 6870417 | Circuit for loss-less diode equivalent A loss-less diode equivalent circuit which functions to reduce and eliminate the forward bias voltage or drop associated with conventional diodes. The loss-less diode comprises a reverse connected MOSFET device which is configured with a clamping circuit and coupled... | 03/22/2005 |
| 6552599 | Diode circuit with ideal diode characteristic A circuit configuration produces an at least approximately ideal diode characteristic on the basis of a diode. A power MOSFET has a control path connected in parallel with the diode, a load path forming connection terminals of the ideal diode, and a gate ... | 04/22/2003 |
| 6518822 | High-frequency switch In a high frequency switch, first and second diodes are respectively connected between first and second ports and between first and third ports so that they are directed in the same direction with respect to the first port. Coupling capacitors are connect... | 02/11/2003 |
| 6480052 | Parasitic capacitance canceling circuit A circuit than may be used in an integrated circuit capacitor design. The circuit generally comprises a multilayer capacitor and a buffer. The multilayer capacitor may be configured as (i) a first capacitance, (ii) a second capacitance, and (iii) a third ... | 11/12/2002 |
| 6087871 | Pulse generating circuits using drift step recovery devices A pulse generating circuit utilizes a drift step recovery transistor to apply power from a direct current power supply to a pulse forming network when a trigger pulse is applied thereto. The pulse forming network comprises a storage inductor connected in ... | 07/11/2000 |
| 6084445 | Power on/reset strap for a high speed circuit An initialization strap is disclosed. The initialization strap includes an electronic device capable of receiving a control signal and of transmitting a first output signal in response thereto; a first diode capable of receiving the first output signal, t... | 07/04/2000 |
| 6060943 | Circuit simulating a diode A circuit simulating the function of a diode in the sense that it conducts current in one direction and blocks current in the opposite direction, but which has a low forward voltage drop. A voltage comparator and a three terminal switch are connected so t... | 05/09/2000 |
| 5990576 | Power supply voltage supplying circuit The positive potential side output of a voltage source (1) is connected to the positive potential side of a first circuit (10) through a terminal (6); the ground (negative potential) side output of voltage source (1) is connected through a terminal (8) to... | 11/23/1999 |
| 5969561 | Integrated circuit having a variable RF resistor A bipolar radio frequency (RF) integrated circuit having a functional equivalent of a PIN diode. The RF integrated circuit includes a low frequency lateral PNP transistor having an emitter having a P+ region, a collector having a P+ region, a base having ... | 10/19/1999 |
| 5872461 | Current bypass circuit used in a semiconductor integrated circuit A current bypass circuit used in a semiconductor integrated circuit supplied with power from power sources having respective different DC voltages in relation to a reference potential, a p type (or n type) substrate of the semiconductor integrated circuit... | 02/16/1999 |
| 5786722 | Integrated RF switching cell built in CMOS technology and utilizing a high voltage integrated circuit diode with a charge injecting node An integrated CMOS diode with an injection ring that enables construction of an integrated CMOS RF switch. Construction techniques of using a diffused n-well resistor, parasitic capacitance and construction of the diode underneath a bonding input pad cont... | 07/28/1998 |
| 5717357 | Output circuit for selectively outputting a signal at one of two voltage levels An output circuit is provided for obtaining an output signal at one of two voltages regardless of the relative difference between the voltage levels. The output circuit includes a first switching circuit that contains two current sources for selectively p... | 02/10/1998 |
| 5680073 | Controlled semiconductor capacitors A controlled capacitor system, which includes a capacitor element (C1) and a forward-biased diode element (D2) connected in series with the capacitor element (C1). The system is such that the diode element (D2) has a capacitance which is less than the cap... | 10/21/1997 |
| 5406297 | Inventory management system An inventory management system which includes a transponder, an interrogation transceiver and control devices utilized therewith. The control devices operate to minimize the power consumption of the transponder while permitting selected, coded operation o... | 04/11/1995 |
| 5270579 | Circuit arrangement for generating an inverse voltage for switching diodes A circuit for generating a cut-off voltage for the switching diodes in a high frequency filter by rectifying the output signal of an oscillator includes a first diode which has a low threshold voltage and which rectifies the output signal to apply the cut... | 12/14/1993 |
| 5252907 | Circuit arrangement for mitigating power switch capacitance A circuit arrangement is provided to mitigate the parasitic capacitance that typically is associated with solid state switches which are designed to carry high current magnitudes. By disposing a capacitive component in series with a power switch which, in... | 10/12/1993 |
| 5212408 | Ultra fast pin diode switch An electronic switch for selectably switching a high frequency signal between an input and an output. The switch comprises a switching element comprising at least two PIN diodes connected in series-opposed configuration between said input and said output.... | 05/18/1993 |
| 5146192 | Delay circuit of ultrasonic diagnostic apparatus using delay line comprising variable capacitance diode and inductor A delay circuit of ultrasonic diagnostic apparatus comprising a delay line consisting of a plurality of unit portions connected in cascade, in each of which an anode of a first variable capacitance diode and a cathode of a second variable capacitance diod... | 09/08/1992 |
| 5107152 | Control component for a three-electrode device A gate biasing circuit including a Schottky barrier diode in series with an ion implanted resistor for use with a baseband MMIC control components such as an MESFET. The diode gate biasing scheme improves the low frequency distortion characteristics of Ga... | 04/21/1992 |
| 5023574 | Nonlinear transmission lines having noncommensurate varactor cells Varactor diodes having noncommensurate parametric values are utilized within respective cells of a nonlinear transmission line. By the appropriate selection of varactor cell parameters, the configuration of a nonlinear transmission line can be improved to... | 06/11/1991 |
| 4942375 | Variable attenuation device intended to be inserted between a transmitter circuit and load circuit A variable attenuation device intended to be inserted between a transmitter circuit having a certain internal impedance and a load circuit; it composed of at least on parallel attenuation branch made up from a variable resistance component (in particular ... | 07/17/1990 |
| 4847568 | Microwave apparatus In order to supply a d.c. bias to the drain electrodes of MESFETS (1-4) in a distributed amplifier operating in the 500 MHz to 20 GHz or above, a d.c. source (15) is connected to the drain line (5,9,11,14) via a feed component (16) which comprises a ferri... | 07/11/1989 |
| 4827497 | Electronic trigger switch for maintenance termination unit A telephone maintenance termination unit utilizes a low voltage, bidirectional trigger switch for performing diagnostic functions on a telephone line. The trigger switch provides low voltage, low current triggering in conjunction with a high holding curre... | 05/02/1989 |
| 4825272 | Semiconductor power switch with thyristor A power switch device comprises an asymmetrically blocking thyristor (ASCR), with which a diode is connected in series. The ASCR as well as the diode require only about one half the central zone thickness as compared with a symmetrically blocking thyristo... | 04/25/1989 |
| 4785208 | Low-inductance anode-cathode R-C circuit for a gate-turn-off power thyristor A low-inductance anode-cathode R-C circuit for a gate-turn-off power thyristor, including circuit diodes, capacitors and line connections for connecting the R-C circuit to a power thyristor. By reducing the spray inductances of circuit diodes, capacitors ... | 11/15/1988 |
| 4768075 | Power semiconductor module A power semiconductor module including a cascade circuit of a low-voltage high-current MOSFET and of a bipolar semiconductor element, for example a field-controlled thyristor, GTO thyristor or Darlington transistor, as a hybrid combination. In this manner... | 08/30/1988 |
| 4742249 | RF switch with diode network and control latch sharing common element A diode network includes a series branch coupled between two signal ports and a shunt branch coupled between a node in the series branch and ground and connected in parallel with a transistor of a latching circuit that is further coupled to supply forward... | 05/03/1988 |
| 4672245 | High frequency diverse semiconductor switch Provided is a power semiconductor device operable to be switched at high frequencies. The semiconductor device according to the present invention is applied to a three-terminal BIMOS power semiconductor device in which a MOS-FET (2) is connected in parall... | 06/09/1987 |
| 4626715 | MOS FET amplifier output stage An output circuit particularly adapted for use in a pulse width modulation amplifier having a significantly reduced power loss during switching times. Inductors are coupled in series with the signal channels of two push-pull connected switching elements. ... | 12/02/1986 |
| 4614921 | Low pass π section digital phase shifter apparatus A low pass π section digital phase shifter apparatus having an inductor and a diode connected in series between two identical parallel circuits. The parallel circuits connect to the series inductor/diode circuit at both the input and output and each circ... | 09/30/1986 |
| 4613765 | Series-counterpulse repetitive-pulse inductive storage circuit A high-power series-counterpulse repetitive-pulse inductive energy storage and transfer circuit includes an opening switch, a main energy storage coil, and a counterpulse capacitor. The load pulse is initiated simultaneously with the initiation of the cou... | 09/23/1986 |
| 4604593 | π-section digital phase shifter apparatus An extra high frequency π-section digital phase shifter apparatus having a diode connected between two identical parallel shunt circuits. The parallel shunt circuits connect to the series inductor/diode circuit at both the input and output and each paral... | 08/05/1986 |
| 4603310 | T-section digital phase shifter apparatus An extra high frequency T-section digital phase shifter apparatus having a pair of back to back diodes connected between the input and output terminals with a parallel circuit connected between the common junction and ground. The shunt parallel circuit ha... | 07/29/1986 |
| 4594557 | Traveling wave video detector A traveling wave video detector utilizing microwave integrated circuit techniques provides increased dynamic range, increased rf bandwidth up to 100 Ghz and improved impedance matching at high input power levels. The video detector comprises an artificial... | 06/10/1986 |
| 4574201 | Radio frequency switching circuit device A radio frequency switching circuit device wherein an LC circuit is inserted between two terminals, while a diode is shunted, and wherein the diode is controlled into its nonconductive state and its conductive state by a D.C. voltage, whereby the path bet... | 03/04/1986 |
| 4564769 | Saturation control of a switching transistor The invention relates to a base control circuit for a switching transistor in which diodes are utilized to maintain the base-emitter voltage at a higher level than the collector-emitter voltage, upon the turn-on voltage being applied, to minimize switchin... | 01/14/1986 |
