1N4762P/TR12

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A 1N4762P/TR12 is a type of diode-zener in the single category provide a wide range of voltage stabilizing and protection from transient high voltage spikes. This type of zener diode is commonly used when a low-voltage, inexpensive, and easy replaceable form of control is desired. In general, the 1N4762P/TR12 provides a constant voltage regulation regardless of changes in input current and temperature.

Application Field

The 1N4762P/TR12 diode-zener is primarily used as a logic-level shifter, and as over-voltage protection. A classic application of the 1N4762P/TR12 is in the reversal of voltage direction, known as flyback voltage operations. This usually occurs when releasing capacitors loaded with high-voltage components from inductive loads. The 1N4762P/TR12 also finds its application in systems using high-voltage input circuits, where it can effectively clip off any voltages that exceed the maximum safe working limit. In most systems, the 1N4762P/TR12 is typically placed in series with a resistor, where the zener supplies a stable reference voltage, and the resistor reduces the current flow.

Working Principle

The 1N4762P/TR12 diode-zener works by creating a threshold voltage and clamping the circuit voltage to it once this voltage level is exceeded. To do this, it utilizes a form of rectification and impedance adjustment. When a voltage source is applied to the anode side of the diode, a large current is created that flows through the diode and divides into two smaller currents. One smaller current follows a forward direction through the diode, and the other current is concentrated largely on the junction, the area between the anode and cathode where the main energy carriage occurs.

When a voltage at or below the zener voltage, which is known as the zener breakdown voltage, is applied, the current inside the diode starts to become limited, usually to around 10-20mA. This phenomenon is known as the zener effect, and it is what allows the zener to remain unaffected by any other changes in voltage. Due to the sharp breakdown properties and the low current flowing across the junction, the 1N4762P/TR12 can remain unaffected by other high-voltage conditions in the system. This is why it is preferred in most voltage-level shifting applications.

The 1N4762P/TR12 diode-zener plays an important role in many systems, providing a stable voltage for management and regulation of the circuit. Its ability to work with high-voltage inputs and safely perform reverse voltage direction makes it a popular choice for many designs. Its affordability and ease of replacement makes it one of the most common types of zener diodes available. With its many applications and low cost, it is no wonder the 1N4762P/TR12 diode-zener continues to be widely used in many circuity designs and operations.

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