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Electronic Circuits and Circuit Design Information

a potpourri of basic electronic circuits, circuit ideas, and formulae for anyone undertaking electronic circuit design

The exact configuration of an electronic circuit is not always easy to remember, and even then there are associated electronic circuit design formulae to calculate the various circuit values. This section of the Radio-Electronics.Com website contains information about basic electronic circuits, building blocks, along with the relevant formulae to provide a unique reference on the web for anyone undertaking electronic circuit design.

This section is organised by the chief component in the circuit. Thus a filter using an operation amplifier would come under the operational amplifier section, and a transistor radio frequency amplifier would come under the transistors section and a pin diode attenuator would be found in the diodes section.

Resistor circuits

Resistors are the most widely used components in electronic circuits. Although very simple in concept they are key to the operation of many circuits. They can be used in a variety of ways to produce the requried results.

Resistor capacitor (RC) circuits

RC or resistor capacitor circuits are used in a number of applications and may be used to provide simple frequency dependent circuits.

Twin T notch filter

LC filter circuits

Using inductors and capacitors a whole variety of filters can be designed and made. These include low pass, high pass and band pass filters

Diode circuits

The diode is one of the most elementary semiconductor devices. It essentialy allows current though the device in one direction. Using this facet of the diode there are many uses, but there are also other facets of its nature that enable to to be used in other applications as well.

Transistor circuits

SCR, Diac and Triac Circuits

SCR overvoltage crowbar circuit

Operational amplifier circuits

Operational amplifiers are one of the main building blocks these days used in analogue electronics. They are not only easy to use, but they are plentiful, cheap and offer a very high level of performance.

Digital logic circuits

Logic circuits consisting of building blocks including AND and OR and NAND and NOR gates for the basis of today's digital circuitry that is used in widely in electronics. Trigger, bistables, flip flops,etc, are also widely sued and can be made up from the basic building blocks.