unijunction transistor การใช้

• This category also includes a few three-terminal devices, such as the unijunction transistor.
• The schematic diagram symbol for a unijunction transistor represents the emitter lead with an arrow, showing the direction of conventional current flow when the emitter-base junction is conducting a current.
• The original unijunction transistor types are now considered obsolete; but a later multi-layer device, the "'programmable unijunction transistor "'( PUT ), is still widely available.
• The original unijunction transistor types are now considered obsolete; but a later multi-layer device, the "'programmable unijunction transistor "'( PUT ), is still widely available.
• This example can be implemented with a current or voltage source, and a threshold device with hysteresis ( neon lamp, thyratron, diac, reverse-biased bipolar transistor, or unijunction transistor ) connected in parallel to the capacitor.
• Measuring elements of static relays have been successfully and economically built up from diodes, zener diodes, avalanche diodes, unijunction transistors, p-n-p and n-p-n bipolar transistors, field effect transistors or their combinations.