Electrical and Electronics Engineering Blog

Explain BJT Transistor construction and working principle

August 26, 2024March 21, 2020 by Gul Faraz

Transistor construction, symbol and equivalent circuit

Explain the working principle and construction of BJT Transistor and Symbol. A transistor can work as digital switch or an amplifier.

Zener Voltage Pass Regulator Explained with Example

August 26, 2024November 1, 2019 by Gul Faraz

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.

Derivation of Diode Current Equation, Calculator, and Example

August 29, 2024September 4, 2019 by Gul Faraz

The diode current equation depends on the dark saturation current, the charge of an electron, and external voltage. We also provide a calculator for the diode current equation.

3 Methods of testing a diode with multimeter and oscilloscope

August 26, 2024August 15, 2019 by Gul Faraz

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.

Diode Voltage Doubler Circuit with Tripler and Quadrupler Explained

August 26, 2024August 9, 2019 by Gul Faraz

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.

Full Wave Bridge Rectifier with Capacitor Filter Design Calculation and Formula

August 29, 2024June 3, 2019 by Gul Faraz

full bridge rectifier current flow during positive half cycle

The Bridge type full wave rectifier can convert an AC to DC by the mean of four diodes in such configuration that the output peak voltage remains equal to secondary of transformer peak. In each half cycle, a set of two diodes conduct and block the current alternately.

Explain BJT Transistor construction and working principle

Zener Voltage Pass Regulator Explained with Example

Derivation of Diode Current Equation, Calculator, and Example

3 Methods of testing a diode with multimeter and oscilloscope

Diode Voltage Doubler Circuit with Tripler and Quadrupler Explained

Full Wave Bridge Rectifier with Capacitor Filter Design Calculation and Formula

Center Tapped Full Wave Rectifier with capacitor filter

Half wave Rectifier with a Capacitor Filter and Ripple Factor Calculation

Forward Bias Diode and Reverse Bias Diode Characteristic Graph

Depletion Region formation in PN Junction diode and potential barrier