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The 100Ω resistor is provided for limiting the current through base. Under initial conditions the button will be open and no current flows through the base of transistor.
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With no base current the transistor acts as open circuit and the entire supply voltage V1 will appears across it. When the button is pressed at certain time, the voltage V2 forms a closed loop with base-emitter of transistor as can be seen in circuit diagram. With this closed loop a current flows through base of transistor and with base current flow the transistor gets turned ON. Having transistor acting as short circuit in ON state there will be collector current which flows through motor making it rotate. This motor will keep rotating until there will be base current.Īfter a certain time when the button is released the base current becomes zero and the transistor gets turned OFF. With transistor going to high resistance state in OFF mode, the collector current also becomes zero bringing motor to stop. The way of controlling power motor via simple push button realizes the use 2N3055 as a switching device and in the same way we can use 2N3055 in other transistor circuits.0.2. PowerBase complementary transistors designed Order this documentMOTOROLAby 2N3055A/DSEMICONDUCTOR TECHNICAL DATANPNComplementary Silicon2N3055AHigh-Power Transistors*MJ15015. Order this documentMOTOROLAby 2N3055/DSEMICONDUCTOR TECHNICAL DATANPN2N3055 *Complementary Silicon Power PNPMJ2955*Transistors. designed for general purpose switching and amplifĠ.4. mj2955-2n3055.pdf Size:130K _motorolaĢN3055SILICON NPN TRANSISTORn SGS-THOMSON PREFERRED SALESTYPEDESCRIPTIONThe 2N3055 is a silicon epitaxial-base NPNtransistor in Jedec TO-3 metal case.
#2n 3055 transistor series#
It is intendedfor power switching circuits, series and shuntregulators, output stages and high fidelityamplifiers.12TO-3INTERNAL SCHEMATIC DIAGRAMABSOLUTE MAXIMUM RATINGSSymbol Parameter Value UnitVCBO Collector-BaseĢN3055MJ2955Complementary power transistorsFeatures Low collector-emitter saturation voltage Complementary NPN - PNP transistorsApplications General purpose Audio Amplifier12DescriptionTO-3The devices are manufactured in epitaxial-base planar technology and are suitable for audio, power linear and switching applications.Figure 1. Internal schematic dĢN3055A (NPN),MJ15015 (NPN),MJ15016 (PNP)MJ15015 and MJ15016 are Preferred DevicesComplementary SiliconHigh-Power Transistors PowerBaset complementary transistors are designed forhigh power audio, stepping motor and other linear applications.