Programming instructions

Transistors
Multisim Component Reference Guide 4-8 ni.com
4.2 Resistor Biased BJT (NPN & PNP)
Resistor biased BJTs are discrete transistors which have had additional resistors added to
them within a standard transistor package. This is done to reduce the space required on the
PCB for the design. The general application is for transistor switches for displays such as
LED and Hex displays.
They come in two varieties: with a NPN transistor or a PNP transistor.
4.3 Darlington Transistor (NPN & PNP)
The Darlington connection is a pair of two bipolar junction transistors for operation as a
composite transistor. The composite transistor acts as a single unit with a current gain that is
the product of the current gains of each bipolar junction transistor.
A Darlington array consists of seven Darlington pairs. Each pair has an input and an output.
There is also one Common and one GND pin on the IC.
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