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  2. Current clamp - Wikipedia

    en.wikipedia.org/wiki/Current_clamp

    The clamp measures the current and other circuitry the voltage; the true power is the product of the instantaneous voltage and current integrated over a cycle. Comprehensive meters designed to measure many parameters of electrical energy ( power factor , distortion , instantaneous power as a function of time, phase relationships, etc.), use ...

  3. Automated patch clamp - Wikipedia

    en.wikipedia.org/wiki/Automated_patch_clamp

    A schematic of a patch clamp chip showing a gigaseal, whole cell recording configuration, and the ion channel and whole cell currents. Many types of systems have been developed for patch clamping cells in suspension cultures. One system uses a traditional pipette and cells in a droplet suspension culture to obtain patch clamp recordings (see ...

  4. Electrophysiology - Wikipedia

    en.wikipedia.org/wiki/Electrophysiology

    The current clamp technique records the membrane potential by injecting current into a cell through the recording electrode. Unlike in the voltage clamp mode, where the membrane potential is held at a level determined by the experimenter, in "current clamp" mode the membrane potential is free to vary, and the amplifier records whatever voltage ...

  5. Patch clamp - Wikipedia

    en.wikipedia.org/wiki/Patch_clamp

    Alternatively, the current clamp technique can be used. In this case, the current passing across the membrane is controlled by the experimenter and the resulting changes in voltage are recorded, generally in the form of action potentials. Erwin Neher and Bert Sakmann developed the patch clamp in the late 1970s and early 1980s. This discovery ...

  6. List of electrical and electronic measuring equipment

    en.wikipedia.org/wiki/List_of_electrical_and...

    Measures current Capacitance meter: Measures the capacitance component Current clamp: Measures current without physical connection Curve tracer: Applies swept signals to a device and allows display of the response Cos Phi Meter: Measures the power factor Distortionmeter: Measures the distortion added to a circuit Electricity meter

  7. Surplus Record Machinery & Equipment Directory - Wikipedia

    en.wikipedia.org/wiki/Surplus_Record_Machinery...

    Thomas P. Scanlan (1896–1986), was the founder and publisher of the Chicago-based Surplus Record. Mr. Scanlan was a University of Notre Dame graduate. After World War I, he began Surplus Record, which grew into a national trade publication for the used-machinery business which listed used machine tools and capital equipment.

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  9. Single-unit recording - Wikipedia

    en.wikipedia.org/wiki/Single-unit_recording

    The ability to record signals from neurons is centered around the electric current flow through the neuron. As an action potential propagates through the cell, the electric current flows in and out of the soma and axons at excitable membrane regions. This current creates a measurable, changing voltage potential within (and outside) the cell.

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