Ideal Transformer

The ideal transformer is an electromagnetic device that allows to increase or decrease the alternating voltage and current while maintaining constant the power

Current Limiter circuit for a Power Supply using a transistor and a resistor.

If the load current exceeds its maximum, an over current protection is needed

The unit of measurement used in the electricity bill is the kWh, however in the electrical or electronic products that we buy in stores, the unit of electricity consumption is given in watts or kilowatts.

Power Factor Definition

Power factor is the ratio between the energy that is converted into work and the electrical energy consumed in a circuit or device

Ohm’s Law relates in one equation the voltage, the current and resistance. Resistance = Resistor’s value.

A more complete expression of Ohm’s Law is achieved using the electric power formula

NOR gate

NOR Logic gate – Truth Table, equivalent circuit. It can be implemented with the concatenation of an OR gate and a NOT gate.

Power Supply block Diagram

Many electronic circuits need a direct current (DC) voltage source, but what we commonly find are voltage sources of alternating current (AC). In order to achieve a direct current voltage source, the alternating current input must follow a conversion process.

Measuring Low Resistances

There are special cases of measuring low resistances, where the value of the component to be measured is too small and the direct measurement using a multimeter / tester is not practical.

The Core-laminated Transformer – Why is a Transformer Core-laminated?

Why it is not possible to use a solid iron core instead of core-laminated? What is Eddy or Foucault’s currents?

The hexadecimal numbering system (base-16)

This numbering system is mainly used to simplify the representation of binary numbers and for the digital handling of colors.

Universal Electric Motor – Constitution, Operation, Speed

The universal electric motor is so named because it is the only motor that can be connected to both alternating current and direct current.

How to Measure Beta of a Transistor? (β / hfe of transistor)

The beta (β) is a characteristic of each transistor. This feature is found in the NTE, ECG manuals, etc. These manuals have a minimum or approximate values of the real values. This means that we do not know the real value of the transistor.