![]() This is an adjustable high current regulator circuit that the output voltage can be adjusted using a 5K potentiometer. Mind is free image that you can download for free in Wiring Fix. Current Boosting Using a PNP Power Transistor (MJ2955)įigure-1 shows the schematic diagram of the circuit. it can be easily replaced by a 2N3055 transistor, which will also make the circuit. for Features DC Current Gain hFE 2070 IC 4 Adc CollectorEmitter Saturation Voltage VCE(sat) 1. This problem can be solved using a pass power transistor. 2N3055(NPN), MJ2955(PNP) Preferred Device Complementary Silicon Power Transistors Complementary silicon power transistors are designed generalpurpose switching and amplifier applications. 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. 2N3055 Power Transistor (NPN) Uploaded by rcuvgd-1. The device features a typical line regulation of 0.01% and a typical load regulation of 0.1%. 2N3055 - Free download as PDF File (.pdf), Text File (.txt) or read online for free. It requires only two external resistors to set the output voltage. Page Link's: 1 2 Part Name Description PDF MFG CO. POWER REGULATOR, SWITCHING AND SOLLENOID DRIVES APPLICATIONS. PDF DOWNLOAD SILICON NPN TRIPLE DIFFUSED TYPE GENERAL PURPOSE POWER TRANSISTOR. ![]() 2N3055 SILICON NPN TRIPLE DIFFUSED TYPE Toshiba Other PDF not available. ![]() ![]() 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. 2N3055 Datasheet - Toshiba Part Name Description MFG CO. 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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