Comparison with vacuum tubes, Electrical Engineering

Comparison with vacuum tubes:

Prior to the growth of transistors, vacuum (electron) tubes (or in the UK (United Kingdom) "thermionic valves" or just "valves") were the major active components in electronic equipment.

Advantages:

The main advantages that have permitted transistors to replace their vacuum tube predecessors in several applications are

  • Small size and minimal weight that permitting the development of miniaturized electronic devices.
  • Highly automated manufacturing processes that resultant in low per-unit cost.
  • Lower possible operating voltages, creating transistors appropriate for small, battery-powered applications.
  • No warm-up period for cathode heaters needed after power application.
  • Lower power dissipation and usually greater energy efficiency.
  • Higher reliability and bigger physical ruggedness.
  • Very long life. Some transistorized devices have been in service for much more than 50 years.
  • Complementary devices available that facilitating the design of complementary-symmetry circuits, something not possible with vacuum tubes.
  • Insensitivity to mechanical shock and vibration so avoiding the problem of microphonics in audio applications.
Posted Date: 1/10/2013 6:29:27 AM | Location : United States







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