germanium - bipolar/darlington?/npn/pnp =4
silicon - bipolar/darlington/thickfilm/thinfilm/npn/pnp =8
J-FET/enhancement/depletion/nchannel/pchannel = 4
MOSFET/enhancement/depletion/nchannel/pchannel = 4
I know of 20 kinds without considering application packaging & frequency (speed).
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Here are some songs with transistor radio in the title and there are probably many more: Transistor Sister by Freddy Cannon Twisted Transistor by Korn Transistor Radio ... three songs by Cloud Cult, Jaya the Cat, and The Methadones Tiny Blue Transistor Radio by Connie Smith
FET stands for field-effect transistor. There are more than just two kinds. The kinds of FET include CNTFET, DEPFET, DGMOSFET, DNAFET, FREDFET, HIGFET, ISFET, JFET, MESFET, MODEFET and OFET.
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A silicon transistor is a transistor made of silicon.
When investigated with an ohm-meter, a transistor resembles two diodes connected "back-to-back". But you can't make a transistor by connecting two diodes back-to-back.
Direct coupled transistor logic is a type of transistor that is more economical to use then integrated circuits. These transistors can be found in many types of wires such as the ones that control cable internet.
A transistor can be in three conditions or states. It can be active (at a voltage higher than the emitter), in saturation or cut off (no current).
The active region of a transistor is when the transistor has sufficient base current to turn the transistor on and for a larger current to flow from emitter to collector. This is the region where the transistor is on and fully operating.
A Unijunction Transistor is a transistor that acts solely as a switch.
Similar to a 2N3906 PNP transistor