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Home > Tag Archives: Voltage Source

Tag Archives: Voltage Source

A voltage source is a two terminal device providing a constant voltage across its terminals regardless of current flowing through it. A voltage source may be dependent on some circuit variable or may be independent at all.

Zener Diode as a Regulator Explained with Example

A Zener Diode is a special purpose diode used for voltage regulation in reverse bias. Zener diode work under breakdown region for typical operation. A minimum current of Zener knee current must be maintained to keep the voltage regulated.

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3 Methods of testing a diode with multimeter and oscilloscope

Symbol of diode

Testing a diode with a digital multimeter in two ways, diode testing portion, and ohmmeter. A diode test is considered passed if it shows low resistance/voltage drop on forward bias and high resistance/voltage drop in reverse bias. A diode curve tracer uses an oscilloscope for VI characteristics graph.

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Voltage Multipliers: Voltage Doubler, Tripler and Quadrupler

Voltage Multipliers are electric circuits to increase the voltage by a factor of two, three or four in case of Voltage Doubler, Tripler or Quarple respectively. The Voltage multiplier circuit uses capacitors and resistors to enhance the voltage level.

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Forward & Reverse Bias of Diode Explained by V-I Characteristic Curves

forward bias and Reverse bias of diode

A diode can be connected in forward and reverse bias with a source. In Forward bias connection, a diode conducts current like a closed switch. Where in reverse bias, a diode blocks current like an open switch.

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What is alternating current (AC): The basic AC definitions

Alternating current

Alternating current (AC) is the type of electrical current which changes its direction and magnitude every moment.

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Capacitor in series and parallel combination: The capacitor connection

Capacitors in Series and parallel

Capacitors can be connected in series and parallel to achieve the desired capacitance. The capacitance of series connection decreases and that of parallel connection increases.

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Difference between ideal and practical/Voltage and Current Source

Difference between ideal and practical Source

In contrast to a practical voltage source, an imaginary deal source provide constant voltage regardless of load current because of no internal resistance. While ideal current source provides a constant current regardless of load current.

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Source Transformation: Current and Voltage Source Conversion

Source Transformation Current and voltage Source conversion

Source transformation or conversion is a technique to replace a voltage source with a current source for circuit simplification and vice versa.

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Thevenin Theorem: The Thevenin Equivalent Circuit

Thevenin Theorem The thevenin equivalent circuit

According to Thevenin Theorem, a complex circuit is reduced to two resistor network, Thevenin Resistor, and Load resistor and a Thevenin Voltage source to avoid redundant computation to analyze a frequent changing resistor.

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