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The Resistance seen by the Op-Amp in our circuits.

The Op-Amp Circuits under test.

Thankfully we are through with the heavy meals of Op-Amp theory for awhile. Tonight’s post will be a full meal but nothing like the last one. We will not have to loosen our belts, walk around the parking lot a few times and move the seat in the car

Continue reading The Resistance seen by the Op-Amp in our circuits.

Our Op-Amp Circuits Input Impedance.

No Chip (or man) is an island.

In a post awhile back, The Load affects the Process. (Electrical Theory and More, I talked about how the input impedance of a voltmeter could affect the voltage readings of that meter. That same concept is back again, only life is getting a little more complicated. This

Continue reading Our Op-Amp Circuits Input Impedance.

An actual OP-Amp Data-sheet.

STmicroelectronics MC4558 Op-Amp Schematic

It is time to start “getting real” in our talk about OP-Amps. So far we have talked about ideal OP-Amps with infinite input resistance, infinite gain, zero output resistance. Often, as with the multimeter that is “good enough”, but often those assumptions can fall short.

Tonight’s post is about an

Continue reading An actual OP-Amp Data-sheet.

The Non-Inverting Op-Amp Amplifier

Non-Inverting Op-amp Amplifier

Today we are going to look at our first electronic circuit. First I probably need to talk a little about this device. An Op-amp stand for Operational Amplifier. Before the days of integrated circuits these were made of individual transistors and formed a block where simple connections made lots of things

Continue reading The Non-Inverting Op-Amp Amplifier