Vacuum tube symbols


Electron tube in which is practiced a high enough pressure so that its electrical properties are not substantially modified by the ionization of residual gas or vapor.
Also known as vacuum tubes and thermionic valves.

Vacuum tube symbols

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Symbols of transistors MOSFET and IGFET


Transistors of field effect (MOSFET and IGFET)
 are transistors constituted by a filament generally of silicon semiconductor, so called channel, and an associate diode called door. 
These symbols can be represented inside a circle.


Symbols of transistors MOSFET and IGFET

Fuente de alimentación estabilizada

Fuente de alimentación estabilizada
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