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Field Effect Transistor Theory – Part 3

Depletion Mode IGFET symbols

In part 2 I finished up the description of the JFET. Tonight I will describe the operation of an Insulated Gate Field Effect Transistor (IGFET). Most often an IGFET is called a MOSFET because of the materials used in it, Metal Oxide Silicon FET. For those of you that have

Continue reading Field Effect Transistor Theory – Part 3

Field Effect Transistor Theory – Part 2

JFET symbols

In Part 1 we introduced a conceptual diagram of the construction of a JFET and talked about what happens if the gate voltages is changed in comparison to the source while the drain to source voltage is kept at a low value. Today we are going to start out talking about what

Continue reading Field Effect Transistor Theory – Part 2

Field Effect Transistor Theory – Part 1

JFET symbols

As we continue to work through the Desulfator circuit we only have one device left that we have yet to talk about and that is the MOSFET. A MOSFET is a type of Field Effect Transistor (FET). Tonight we are going to point the ship toward understanding it, but to understand the

Continue reading Field Effect Transistor Theory – Part 1