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Using these conventions, in a common-emitter amplifier, the ratio v c /v b represents the small-signal voltage gain at the transistor, and v c /i b the small-signal trans-resistance, from which the name transistor is derived by contraction. In this convention, v i and v o usually refer to the external input and output voltages of the circuit or ...
TO in TO-8 stands for "transistor outline" and refers to a series of technical drawings produced by JEDEC. [1] The TO-8 package is noticeably larger than the more common TO-5 package. While originally designed for medium power transistors (that is, higher power than TO-5 but lower than TO-3 ) such as the 2N1483 series [ 2 ] or the AD136, [ 3 ...
The other type of packaging used in the 1970s, called the ICP (Integrated Circuit Package), was a ceramic package (sometimes round as the transistor package), with the leads on one side, co-axially with the package axis. Commercial circuit packaging quickly moved to the dual in-line package (DIP), first in ceramic and later in plastic. [5]
Solid Logic Dense (SLD) increased packaging density and circuit performance by mounting the discrete transistors and diodes on top of the substrate and the resistors on the bottom. [3]: 15 SLD voltages were the same as SLT. Unit Logic Device (ULD) use flat-pack ceramic packages, much smaller than SLT's metal cans.
Very-large-scale integration (VLSI) is the process of creating an integrated circuit (IC) by combining millions or billions of MOS transistors onto a single chip. VLSI began in the 1970s when MOS integrated circuit (metal oxide semiconductor) chips were developed and then widely adopted, enabling complex semiconductor and telecommunications technologies.
An electronic circuit is composed of individual electronic components, such as resistors, transistors, capacitors, inductors and diodes, connected by conductive wires or traces through which electric current can flow. It is a type of electrical circuit. For a circuit to be referred to as electronic, rather than electrical, generally at least ...
The BC548 is a part of a family of NPN and PNP epitaxial silicon transistors that originated with the metal-cased BC108 family of transistors.The BC548 is the modern plastic-packaged BC108; [6] the BC548 article at the Radiomuseum website [7] describes the BC548 as a successor to the BC238 and differing from the BC108 in only the shape of the package.
A logically equivalent transistor matrix is still used as the control store or microprogram or 'decode ROM' in many modern microprocessors. A single row of the diode matrix (or transistor matrix) is activated at any one instant. Charge flows through each diode connected to that row. That activates the column corresponding to each row.