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There are two types of electronic or electrical equipment: those that supply energy and those that use power. On the device that supplies the power supply, the cathode is a positive terminal and the anode is a negative terminal. For devices that use strength, the cathode is a negative terminal and the anode is a positive terminal. A positive cathode current is a current that flows from the cathode, and the current of the negative cathode flows into the cathode. Electrons

have a negative charge and are attracted by a positive charge. It is the flow of electrons with a conductive material that forms electric current, and electrons always flow from the negative to positive. Therefore, electrons tend to leak from the cathode, which is a negative terminal, and into the anode, which is a positive terminal. This makes the cathode current of some devices such as diodes and batteries somewhat complicated.

Batteries are marked with positive and negative terminals, often using plus, or a minus sign (-). These labels can be misleading.The current battery flow is a positive current-which means the current-which leaves the positive battery terminal, flows through the circuit and back to the negative battery terminal. The positive battery terminal actually has a negative charge and is a cathode device. The cathode current flows from the positive battery terminal.

Electronic devices called diodes have polarized terminals. The diode cathode consists of a negative material, which means it has more electrons than protons. It can withstand electrons, because the material already has excess electrons. The anode is on the contrary and lacks electrons, which facilitates the flow of electrons into it. Because the number of electrons in the positive material of the anode reaches a certain level of the resistance of the negative material and the current of the forward or positive cathode from the cathode terminal of the diodes.

The

diode will start performing in the opposite direction if the voltage is high enough. On a standard diode this reverseThe current quickly causes permanent damage to the diode. LEDs of special purposes, such as Zener diodes and tunnel diodes, are designed to perform after reverse voltage reaches a specific threshold. The current of the back or negative cathode flows into the diode via the cathode and from the anode.

Vacuum tubes are somewhat different because of how they work. The electrons flow into the cathode of the device and are collected on the electrode in the vacuum of the tube. As the negative charge on the electrode grows, electrons leave the electrode and flow into a more positively charged anode. This causes a positive current flow from the anode terminal of the tube. In this case, the cathode current is a negative current and the flow of the device, rather than that.