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Opamp Design and Test Board

Opamp Design and Test Board

Opamps are wonderful little building blocks, but quickly building a test circuit is a real pain. Most people will use a breadboard, one of those plastic blocks with holes and connections, but I have found them to be a complete pain in the backside.

http://www.sound.au.com/project41.htm

Main principles of amplifier wiring

Main principles of amplifier wiring

There may be differences depending on how the amp is fed: whether symmetrically or asymmetrically. These two main concepts are commonly called split supply and single supply, respectively.

http://home.eunet.cz/rysanek/opamp_en.html

Discrete op amp made with common transistors

Discrete op amp made with common transistors

http://margo.student.utwente.nl/el/analog/disc-oa.gif

Discrete Op-Amp circuits

Discrete Op-Amp circuits

It is not at all difficult to make an op-amp using transistors. This page shows you how and discusses how they work.

http://www.4qdtec.com/opamp.html

Radio made by OP-AMP

Radio made by OP-AMP

This is normal superheterodyne radio receiver. It does not use any coils. It uses a filter and oscillator made by OP-AMP. Converter is also constructed by a OP-AMP detector.

http://www.intio.or.jp/jf10zl/opraio.htm

Single OpAmp Bandpass Filter

Single OpAmp Bandpass Filter

A band pass filter passes a range of frequencies while rejecting frequencies outside the upper and lower limits of the passband. The range of frequencies to be passed is called the passband and extends from a point below the center frequency to a point ab

http://ourworld.compuserve.com/homepages/Bill_Bowden/opamp.htm#bandpass.gif

LM12CL - 80W Operational Amplifier

LM12CL - 80W Operational Amplifier

The LM12 is a power op amp capable of driving 25V at 10A while operating from 30V supplies.

http://www.national.com/pf/LM/LM12CL.html