Inverting


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Inverting

 

in electric power engineering, the conversion of direct electric current to single-phase or polyphase alternating current by means of a device that consists of controlled electric valves. Inverting is the reverse of rectifying.

Inverter circuits with several electric valves are used in practice. The power losses in inverting depend on the voltage drop Δ U in the valves. The ratio of power losses in the valves to the useful converted power is approximately equal to Δ U/U, where U is voltage of the DC power supply. In mercury valves Δ U does not exceed several dozen volts. For DC voltages of several kilo-volts the inverting losses in valves are less than 1 percent. The losses in other parts of the circuit (chokes, capacitors, and control circuits) usually do not exceed a few percent. The total efficiency of inverting is usually above 90 percent.

References in periodicals archive ?
* The component pins for connection of inverting and non inverting pins are usually adjacent/close to each other.
In descriptive analyses, we compare 20 single-company inverting firms to their industry averages on a number of dimensions relevant to an inversion decision.
Inverting the face clearly disrupted the participants' ability to identify and label all of the expressions of emotion.
Pathology identified the tissue as an inverting papilloma.
In what they call chromosome engineering, researchers have succeeded in deleting, inverting, or rearranging not single genes but large, selected blocks of mouse DNA.
The clinical hehavior of inverting papilloma of the nose and paranasal sinuses: Report of 112 eases and review of literature.
Unusual anatomic presentations of inverting papilloma.