A coupler circuit for sampling an output power of a signal from an output power source has at least one first sampling element for sampling a first portion of the signal and at least one second sampling element for sampling a second portion of the signal. The first sampling element and the second sampling element are separated by an output matching network defined by a set of S-parameters. A processor coupled to the at least one first and second sampling elements determines the output power base...

An active inductor with a smaller voltage drop with respect to the power supply voltage of an integrated circuit can be realized by an active inductor which is biased from a voltage higher than the power supply voltage, the higher voltage being generatable on the integrated circuit. Advantageously, more headroom is left for the amplifying circuit coupled to the active inductor to operate properly than with prior art active inductors. Furthermore, by not simply operating the entire active inducto...

The present invention relates to novel quinoline derivatives of the formula ##STR1## which inhibit exogenously or endogenously stimulated gastric acid secretion and thus can be used in the prevention and treatment of gastrointestinal inflammatory diseases.

An active phospholipid of the formula ##STR1## wherein R.sub.1 is aliphatic of 14 to 24 carbon atoms saturated or containing 1 or 2 unsaturations, R.sub.3 is a residue selected from the group consisting of choline, ethanolamine, glycerol, serine, inositol, ethanol, n-propanol, n-butanol and ethylene glycol and ##STR2## is an active group in the 2-position of the glycerol released by phospholipases and cosmetic and dermatological compositions containing the same useful for treating or caring for ...

An active inductor circuit (L) includes first (T1) and second (T2) terminals for coupling to respective external terminals (Hi,Lo), said first and second terminals being coupled to a first transconductance circuit (gm1), a second transconductance circuit (gm2) and a feedback circuit (fb) included in said active inductor circuit. An output terminal (OUT1) of said first transconductance circuit (gm1) is coupled to an input terminal of said second transconductance circuit (gm2), an output terminal ...

A switching circuit has an active switch, a controller, and at least two terminals. The at least two terminals include two current control terminals for connection at two locations in another circuit. The controller is configured to turn the active switch off to block current between the two locations when the voltage between the two locations is of a first polarity and otherwise to turn the active switch on to conduct current between the two locations, whether or not the two current control ter...

An active filter comprising a first operational amplifier (10) disposed in an inverting integral configuration through a feedback capacitor (14) and a main resistor (15), and a divider (20) connected through a first connecting terminal (22) thereof with a noninverting input (12) of the first operational amplifier (10). In a second embodiment filter 1 comprises a main operational amplifier (100) dispose in an inverting integral configuration through a capacitor (101) and a resistor (102), and a s...

An active inductor having a greater inductance, low loss, and which is small is provided by the present invention. The active inductor comprises a common source FET and a cascode-connected common gate FET connected thereto for providing unidirectional feedback. The drain electrode of the front FET and the source electrode of the rear FET, consisting of the common gate cascode FET, are connected together. A resistor is connected at one end to this connection. The two terminals of the active induc...

There is provided an active filter, having a first high-pass filter for receiving an input signal, performing filter processing of the input signal, and outputting a first signal, a second high-pass filter, an input terminal of which is connected to an output terminal of said first high-pass filter, and which receives the first signal, performs filter processing, and outputs a second signal, a differential amplifier, one input terminal of which is connected to an output terminal of said second h...

An active filter for compensation of polluting harmonics on an electricity distribution network comprising a source of energy (19, 20), a bridge converter (21) connected between the energy source and the network, control means which control the bridge converter in order to compensate for the polluting harmonics, characterized in that the state of the energy source (19, 20) is independant of the control of the bridge converter carried out by the control means (22) and in that the control means (2...