| 释义 |
- Early tetrode transistors
- Modern tetrode transistors
- References
- External links
A tetrode transistor is any transistor having four active terminals. Early tetrode transistorsThere were two types of tetrode transistor developed in the early 1950s as an improvement over the point-contact transistor and the later grown junction transistor and alloy junction transistor. Both offered much higher speed than earlier transistors. - Point-contact transistor having two emitters. It became obsolete in the middle 1950s.
- Modified grown junction transistor or alloy junction transistor having two connections at opposite ends of the base.[1] It achieved its high speed by reducing the input to output capacitance. It became obsolete in the early 1960s with the development of the diffusion transistor.
Modern tetrode transistors- Dual emitter transistor, used in two input transistor-transistor logic gates.
- Dual collector transistor, used in two output integrated injection logic gates.
- Diffused planar silicon bipolar junction transistor,[2] used in some integrated circuits. This transistor, apart from the three electrodes, emitter, base and collector, has a fourth electrode or grid made of conducting material placed near the emitter-base junction from which it is insulated by a silica layer.
- Field effect tetrodes
References1. ^{{cite book | last = Wolf | first = Oswald |author2=R. T. Kramer |author3=J. Spiech |author4=H. Shleuder | title = Special Purpose Transistors: A Self-Instructional Programmed Manual | publisher = Prentice Hall | year = 1966 | pages = 98–102}}
2. ^{{US patent|4143421}} - Tetrode transistor memory logic cell, March 6, 1979. Filed September 6, 1977.
External links - Some application aspects of the tetrode transistors PDF (point contact)
- TRANSISTOR MUSEUM Historic Transistor Photo Gallery WESTERN ELECTRIC 3N22 (grown junction)
- The Tetrode Power Transistor PDF (alloy junction)
1 : Transistor types |