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2. Anode - Wikipedia

   en.wikipedia.org/wiki/Anode

   In the following examples, the anode is negative in a device that provides power, and positive in a device that consumes power: In a discharging battery or galvanic cell (diagram on left), the anode is the negative terminal: it is where conventional current flows into the cell. This inward current is carried externally by electrons moving outwards.

3. Terminal (electronics) - Wikipedia

   en.wikipedia.org/wiki/Terminal_(electronics)

   On many dry batteries, the positive terminal (cathode) is a protruding metal cap, and the negative terminal (anode) is a flat metal disc (see Battery terminal). In a galvanic cell such as a common AA battery, electrons flow from the negative terminal to the positive terminal, while the conventional current is opposite to this. [6]

4. Cathode - Wikipedia

   en.wikipedia.org/wiki/Cathode

   In a diode, the cathode is the negative terminal at the pointed end of the arrow symbol, where current flows out of the device. Note: electrode naming for diodes is always based on the direction of the forward current (that of the arrow, in which the current flows "most easily"), even for types such as Zener diodes or solar cells where the ...

5. 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.

6. Electric battery - Wikipedia

   en.wikipedia.org/wiki/Electric_battery

   The terminal marked negative is the source of electrons. When a battery is connected to an external electric load, those negatively charged electrons flow through the circuit and reach the positive terminal, thus causing a redox reaction by attracting positively charged ions, or cations.

7. Battery terminal - Wikipedia

   en.wikipedia.org/wiki/Battery_terminal

   Some batteries sizes are available with terminals in many different configurations, but two main configurations are: positive on left and negative on the right corner; negative on the left and positive on the right corner. Terminals can also be both on the long or short side of the battery, or diagonally opposed, or in the middle.

8. Negative-feedback amplifier - Wikipedia

   en.wikipedia.org/wiki/Negative-feedback_amplifier

   Paul Voigt patented a negative feedback amplifier in January 1924, though his theory lacked detail. [4] Harold Stephen Black independently invented the negative-feedback amplifier while he was a passenger on the Lackawanna Ferry (from Hoboken Terminal to Manhattan) on his way to work at Bell Laboratories (located in Manhattan instead of New Jersey in 1927) on August 2, 1927 [5] (US Patent ...

9. p–n junction - Wikipedia

   en.wikipedia.org/wiki/P–n_junction

   Because the p-type material is now connected to the negative terminal of the power supply, the 'holes' in the p-type material are pulled away from the junction, leaving behind charged ions and causing the width of the depletion region to increase. Likewise, because the n-type region is connected to the positive terminal, the electrons are ...