# Tag - Circuits

## LED Circuits and Projects

CircuitsToday.com is introducing some simple LED circuits and projects which can be done even at home. These circuits and projects have already been tested and published along with circuit diagram, schematics, and a detailed working description for each one of them. Also go through [...]

## Most Popular Electronic Circuits

In this article we are attempting to list the most popular electronic circuits we have published over the last couple of years.  We know, its a little difficult task! First hurdle to cross is selecting the criteria to decide – “what makes a circuit [...]

## RL Circuits Inductive Kick Diode Snubbers

RL Circuits. Inductive Kick. Diode Snubbers. Inductors are the third basic discrete component listed in . Uses for inductors in the NorCal 40A include filters and RF “chokes.” The latter provides essentially a short circuit at DC and nearly an open circuit at RF frequencies. [...]

## DC Analysis of BJT Circuits

In this section we will consider a number of BJT circuits and perform the DC circuit analysis. For those circuits with an active mode BJT, we’ll assume that VBE = 0.7V (npn) or V EB = 0.7V (pnp). Example N12.1 (text example 5.4). Compute [...]

## Diode Rectifier Circuits

We saw in the previous lecture that Zener diodes can be used in circuits that provide (1) voltage overload protection, and (2) voltage regulation. An important application of “regular” diodes is in rectification circuits. These circuits are used to convert AC signals to DC in [...]

## Limiting and Clamping Diode Circuits

Voltage Doubler. Special Diode Types . We’ll finish up our discussion of diodes in this lecture by consider a few more applications. We’ll discuss limiting and clamping circuits for diodes as well as voltage doubling circuits. Voltage Limiting Circuits These types of circuits are used to “cap” [...]

## DC Analysis of Diode Circuits

We’ll now move on to the DC analysis of diode circuits. Let’s consider this very simple diode circuit: We will assume that the diode is forward biased. Using KVL VDD=IR+VD From the characteristic equation for the diode Assuming n, IS, and VT are known, we have [...]

## Resistors in AC Circuits

In the previous tutorials we have looked at resistors, their connections and used Ohm’s Law to calculate the voltage, current and power associated with them. In all cases both the voltage and current has been assumed to be of a constant polarity, flow and [...]

## Capacitance in AC Circuits

When capacitors are connected across a direct current DC supply voltage they become charged to the value of the applied voltage, acting like temporary storage devices and maintain or hold this charge indefinitely as long as the supply voltage is present. During this charging [...]

## Combinational Logic Circuits

Unlike Sequential Logic Circuits whose outputs are dependant on both their present inputs and their previous output state giving them some form of Memory, the outputs of Combinational Logic Circuits are only determined by the logical function of their current input state, logic “0” [...]

## Power in AC Circuits

Electrical power is the “rate” at which energy is being consumed in a circuit and as such all electrical and electronic components and devices have a limit to the amount of electrical power that they can safely handle. For example, a 1/4 watt resistor [...]

## Sequential Logic Circuits

Sequential Logic In other words, the output state of a “sequential logic circuit” is a function of the following three states, the “present input”, the “past input” and/or the “past output”. Sequential Logic circuits remember these conditions and stay fixed in their current state until [...]