Voltage Regulator with current limiter

Voltage Regulator with current limiter

There are times when the amount of current that is required of a power supply exceeds its potential.

If the current demand is very high, the pass transistor of the voltage regulator may be damaged. On these cases it is necessary that the circuit has an overcurrent protection.

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Transistor - Zener diode Voltage regulator circuit

Transistor – Zener diode Voltage regulator circuit

Transistor – Zener diode Voltage regulator circuit

This circuit delivers an output voltage established by the voltage of the zener diode less 0.7 volts. The 0.7 volts is the average voltage drop between the base and the emitter of a transistor. (Vbe)

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Zener diode Voltage regulator Circuit Design

Zener diode Voltage regulator Circuit Design

Zener diode Voltage regulator calcutation

A Zener diode Voltage regulator calcutation is made using a simple circuit of a resistor /Rs) and a Zener diode (Z).

This two elements values and characteristics are obtained using special formulas

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Transistorized Voltage Regulator

Transistorized Voltage Regulator

Transistorized Voltage Regulator Using a half and a full-wave rectifier we can convert an AC voltage in a DC one. This converted voltage is unregulated, because the output DC voltage does not remain constant. The output voltage of a power supply may vary due to changes in the load value. To reduce these variations we connect […]

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Voltage regulator classification

Voltage regulator classification a) Linear voltage regulators Linear voltage regulators control the output voltage, continuously adjusting the voltage drop in a power transistor that is connected in series between the unregulated input and the load. Since an electric current must flow through the transistor all the time, the transistor have to operate in its linear region. Although they are simpler […]

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Voltage. Electrical Potential difference

Voltage. Electrical Potential difference

What is Voltage? Voltage is the electrical potential difference caused by the accumulation of electric charges on a point, or a material. If we remove electrons from a material, its total electric charge will be positive. Remember that we are removing electrons, which are negatively charged, from a neutral atom (which has no charge). This causes the atom is no […]

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