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  2. DC connector - Wikipedia

    en.wikipedia.org/wiki/DC_connector

    Often pins 1 and 2 will be negative, 3 and 4 positive for a higher current rating. Female connectors are used as supply and male connectors are used on loads. Most battery belts and power supplies output 13.2 V, but equipment can usually handle a range of 11–18 volts to accommodate battery packs of varying voltages and charging while operating.

  3. Polarity symbols - Wikipedia

    en.wikipedia.org/wiki/Polarity_symbols

    Diagram showing positive tip polarity on the left and negative tip polarity on the right. To read diagram: The center positive drawing on the left indicates that the center (also known as the tip) of the output plug is positive (+) and the barrel (ring) of the output plug is negative (−). Center positive symbol Center negative symbol

  4. Glossary of electrical and electronics engineering - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_electrical_and...

    A device that reduces the inrush current when an electric motor is first connected to the power supply. MP3 A standard for encoding audio in digital form. MRI Magnetic Resonance Imaging, a technique for examining the interiors of, for example, medical patients, using sensitive measurements of the magnetic fields of atomic nuclei. multics

  5. Differential signalling - Wikipedia

    en.wikipedia.org/wiki/Differential_signalling

    The pair of conductors can be wires in a twisted-pair or ribbon cable or traces on a printed circuit board. Electrically, the two conductors carry voltage signals which are equal in magnitude, but of opposite polarity. The receiving circuit responds to the difference between the two signals, which results in a signal with a magnitude twice as ...

  6. Electrode - Wikipedia

    en.wikipedia.org/wiki/Electrode

    In a vacuum tube or a semiconductor having polarity (diodes, electrolytic capacitors) the anode is the positive (+) electrode and the cathode the negative (−). The electrons enter the device through the cathode and exit the device through the anode. Many devices have other electrodes to control operation, e.g., base, gate, control grid.

  7. Passive sign convention - Wikipedia

    en.wikipedia.org/wiki/Passive_sign_convention

    Illustration of the "reference directions" of the current (), voltage (), and power () variables used in the passive sign convention.If positive current is defined as flowing into the device terminal which is defined to be positive voltage, then positive power (big arrow) given by the equation = represents electric power flowing into the device, and negative power represents power flowing out.

  8. Glossary of medicine - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_medicine

    Medical classification – A medical classification is a list of standardized codes used in the process of medical coding and medical billing. Medical coding – The practice of assigning statistical codes to medical statements, such as those made during a hospital stay.

  9. Medical dictionary - Wikipedia

    en.wikipedia.org/wiki/Medical_dictionary

    Definition page from Amy Pope's 'A medical dictionary for nurses' (1914) A medical dictionary is a lexicon for words used in medicine. The four major medical dictionaries in the United States are Mosby's Dictionary of Medicine, Nursing & Health Professions, Stedman's, Taber's, and Dorland's. Other significant medical dictionaries are ...