Other Customers searching for 2N3055 also ViewedĢN3055 2N3055 PBFREE 2N3055. GP 2N br Pd DC 20 NPN 70V 60V mil 15A 407 BJT ceo hFE BIP TO3 65C T03 RoHS Gain 115W 3PIN 100W Case 100V spec TO-3 Trans jantx Power 2+Tab 3-Pin +200C Range JEDEC HI-REL 6000mW Bipolar Emitter Voltage Current Polarity Discrete Collector Operating Compliant Transistor Dissipation Temperature Transistors JANTXV2N3055 Semiconductor MIL-PRF-19500 General Purpose JAN (Joint Army Navy) Bipolar Junction Transistor Interchangeable Parts and Other Names for 2N3055 Our prices change without notice to remain competitive during the ship shortage. This is an adjustable high current regulator circuit that the output voltage can be adjusted using a 5K potentiometer.All parts listed are in our stock and ready to ship. Current Boosting Using a PNP Power Transistor (MJ2955)įigure-1 shows the schematic diagram of the circuit.
This problem can be solved using a pass power transistor. Overload protection remains functional even if the ADJUST terminal is disconnected.” This information proves to us that this cheap 3-terminal device is suitable for many applications but it comes with a drawback for power applications and that is the limitation of the regulator’s output current handling (1.5A in the best conditions). It includes current limiting, thermal overload protection, and safe operating area protection. The device features a typical line regulation of 0.01% and a typical load regulation of 0.1%. It requires only two external resistors to set the output voltage. In this article, I will discuss two methods of LM317 current boosting, using power PNP and NPN pass transistors.Īccording to the LM317 datasheet: “The LM317 device is an adjustable three-terminal positive-voltage regulator capable of supplying more than 1.5 A over an output-voltage range of 1.25 V to 37 V. However, the chip can deliver currents up to 1.5A which is not enough for some power applications.
The output voltage of the regulator can be adjusted from 1.25V to 35V. LM317 is one of the most popular adjustable regulator chips.
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