The inventor has created several power supplied to eliminate or greatly reduce the ground loop problem. The inventor has discovered that the ground loop distortion is caused by the switching from positive to negative in alternating current. What the inventor has found is that just placing a diode across the two terminals of a power supply works to eliminate distortion and the ground loop problem. In the two simplest power supplies, the inventor has places a diode across the output from a half wa...

A rectifier comprising a preregulator (11; 21) and a DC/DC converter (13; 23) is disclosed, comprising means for controlling the output power P.sub.OUT from the DC/DC converter in dependence of the input power to the preregulator. A method of controlling such a rectifier by controlling the output power P.sub.OUT in dependence of the input current I.sub.IN is also disclosed. This ensures that the output power from the rectifier is never higher than what the preregulator can supply. As a result th...

The inventor has created several methods to eliminate or greatly reduce the ground loop problem. The inventor has discover that ground loop distortion is caused by the switching from positive to negative in alternating current. He has designed several devices to eliminate this problem. In his first embodiment he places a set of two diodes either cathode to cathode or anode to anode in parallel with all the capacitors in an amplifier or other electronic device. These sets of diodes eliminate the ...

The invention relates to a rectifier with midpoint feed, comprising a first and a second input terminal (A,B), which form an input of the rectifier, a first and a second output terminal (P,M), which form a first output of the rectifier, the first output terminal (P) forming the positive pole and the second output terminal (M) forming the negative pole of the first output of the rectifier, where a series circuit comprising a first and a second coupling capacitor (C.sub.1, C.sub.2) is arranged in ...

In one embodiment, the voltage rectifying device includes two input terminals for an AC voltage, rectifying means made using integrated technology within a semiconductor substrate, and two output terminals for a rectified voltage, one of these output terminals being taken out at substrate level. The rectifying means may include a pair of first insulated-gate field-effect transistors connected as diodes with one of their electrodes linked to the substrate, and a pair of second insulated-gate fiel...

A plumbing fixture has a housing adapted to be secured to a support surface, forming a compartment dimensioned to snugly receive a battery, and formed with a passage extending from the compartment to the surface. Contacts exposed in the compartment are positioned to engage terminals of the battery. At least one feed conduit extends from the housing through a hole in the support surface so that liquid can be fed to the housing through the conduit. An electrically controlled valve in the housing i...

An electronic power supply (100) receives power from an AC source (10) and supplies power to a load (20) that is referenced to earth ground (30). Power supply (100) comprises a power converter (200) and a voltage regulator (400). Power converter (200) draws a ground leakage current from AC source (10) and is capable of providing a steady-state output current having an average value that is greater than that of the ground leakage current. Voltage regulator (400) limits the output voltage of the p...

A power supply device that is capable of outputting multiple different output voltages is coupled by a DC power supply cord to an electrical device. An unpowered memory in the electrical device stores information about the power requirements of the electrical device (for example, the DC supply voltage required). In a first time period, when the power supply device is not powering the electrical device, the power supply device sends an energizing pulse train across the power cord. The electrical ...

A controllable rectifying element, comprising a bipolar transistor having a current input terminal connected to a control terminal by a first switch and having a current output terminal connected to the control terminal by a second switch, the turn-off and turn-on phases of the first and second switches being complementary and depending on the state desired for the rectifying element.

A rectifier system, in particular a rectifier bridge for a three-phase generator, includes a plurality of rectifier elements, specifiable rectifier elements being different from the other rectifier elements in at least one property. The rectifier elements are, for example, diodes which differ from one another with regard to the following properties: switching time or the reverse recovery switching time and/or current density and/or chip area and/or chip thickness and/or the breakdown voltage and...