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Transfer Characteristics

We know that for a bipolar junction transistor (BJT), the output collector current IC and the control input base current IB are related by the parameter beta, which is assumed to be constant for an analysis. Referring to the equation below, we find a linear relationship existing between IC and IB. If we make the … Read moreTransfer Characteristics

MOSFET (Enhancement-Type)

Although depletion type and enhancement type MOSFETs look similar with their internal structures and functional mode, their characteristics may be quite different. The main difference being the drain current which depends on a specific level of gate-to-source voltage for the cut off action. Precisely, for an n-channel enhancement-type MOSFET a positive gate/source voltage effects its … Read moreMOSFET (Enhancement-Type)

Darlington Transistor Calculations

Darlington transistor is a well known and popular connection using a pair of bipolar transistor junction transistor (BJT), designed for operating like an unified “superbeta” transistor. The following diagram shows the details of the connection. Definition A Darlington transistor can be defined as a connection between two BJTs that allows them to form a single … Read moreDarlington Transistor Calculations

MOSFET (Depletion-Type)

Two main types of FETs that presently exist are: JFETs and MOSFETs. MOSFETs can be further classified into depletion type and enhancement type. Both these types define the fundamental mode of operation of MOSFETs, while the term MOSFET itself is the abbreviation of metal-oxide-semiconductor-field-effect transistor. Due to the fact that the two types have different … Read moreMOSFET (Depletion-Type)

Field-Effect Transistors (FET)

The field-effect transistor (FET) is an electronic device in which an electric field is used to regulate the flow of current. To implement this a potential difference is applied across the gate and source terminals of the device, which alters the conductivity between the drain and source terminals causing a controlled current to flow across … Read moreField-Effect Transistors (FET)

How to Troubleshoot Transistor (BJT) Circuits Correctly

BJT troubleshooting techniques is a huge topic and therefore including 100 % solutions and strategies can be perhaps difficult within a single article. Basically, the user should know about a handful of fundamental moves and measurements which may enable him to spotlight the location of the problem and help recognize the remedy. Quite certainly, the … Read moreHow to Troubleshoot Transistor (BJT) Circuits Correctly

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