Logic Levels (high, low, 0, 1)

In digital circuits is common to say that we have a “high or a “low” logic level at the input or output of a circuit. If we have a “high” level we say it is a “1” and if we have a “low” level we say that it is a “0”.

What is Resonance in RLC Circuits?

Resonance in RLC Circuits is a special condition for parallel and series RLC circuits, when capacitive reactance and inductive reactance have the same magnitude and cancel each other. This only happens at frequency fo.

What is a Voltage divider?

The Voltage divider is a circuit that allows us to obtain an output voltage less or equal to the input voltage. The output voltage is normally obtained across ground and the resistor connected to it, but it could be across any of the other resistors.

Ebers Moll Model of a Bipolar Transistor

The bipolar transistor is an electronic device that originates a big evolution in the electronics field. The basic features of the bipolar transistor are introduced on this topic. We’ll study the basic model (Ebers Moll Model) of these devices and their use in the analysis of circuits biasing.

What is the Impedance of an Inductor?

The impedance of an inductor (also called inductance) is the measure of the opposition to a change of electrical current in this component.

Power in AC circuits.

Electric power. Electrical power on a circuit with reactive load (reactance).

How to obtain the current in a circuit having resistance and reactance.

The Gray code

The Gray code is a special type of binary code that is unweighted (the digits that make up the code does not have an assigned weight).

Aiken code – Excess 3 code

Aiken BCD code is similar to the natural BCD code, but with “weights” or “values” distributed differently.

The Excess 3 Code is obtained by adding “3” to each combination of the natural BCD code.

JK Flip-Flop – PRESET & CLEAR Inputs – Truth Table

The JK Flip-Flop is a sequential device with 3 inputs (J, K, CLK (clock signal)) and 2 outputs (Q and Q’). J and K are control inputs.

Sequential Circuits Using Logic Gates

The main difference between combinational circuits and sequential circuits is that in sequential circuits there is one or more output signals fed back to one or more inputs to obtain a new output.

What are MOSFET Transistors?

MOSFET Transistors or Metal Oxide-Semiconductor (MOS) are field effect devices that use the electric field to create a conduction channel. MOSFET transistors are more important than JFETs because almost all Integrated Circuits are built with the MOS technology.

Combinational Circuit Using Logic Gates

A combinational circuit is a circuit where the output depends only on the combination of the inputs at the time we are testing the output