1A linear voltage regulator using 2n3055 transistor and Zener diode. The device is designed for general purpose switching and amplifier applications. Transistor Equivalent - Free download as PDF File (. This is an adjustable high current regulator circuit that the output voltage can be adjusted using a 5K potentiometer.2N3055 NPN Power Transistor – TO-3 Metal PackageĢN3055 is a general purpose NPN power transistor manufactured with the epitaxial base process, mounted in a hermetically sealed metal case. Check part details, parametric & specs updated and download pdf datasheet from, a global distributor of electronics components. Current Boosting Using a PNP Power Transistor (MJ2955)įigure-1 shows the schematic diagram of the circuit. Mospec Semiconductors 2N3055 is trans gp bjt npn 60v 15a 3-pin(2+tab) to-3 in the bipolar transistors, gp bjt category. 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). The high current handling capacity upto 7 amps of this device will allow an ideal, charging for any battery from 7 Ah to 150 Ah using the above circuit. It includes current limiting, thermal overload protection, and safe operating area protection. This simple automatic 2N3055 based battery charger circuit can be used for charging any lead acid battery from 12V to 48V. The device features a typical line regulation of 0.01% and a typical load regulation of 0.1%.
Features: DC Current Gain: hFE 20 70 IC 4A CollectorEmitter Saturation Voltage: VCE(sat) 1. It requires only two external resistors to set the output voltage. 2N3055 Silicon NPN Power Transistor Audio Power Amp, Medium Speed Switch TO3 Type Package Description: The 2N3055 is a silicon NPN transistor in a TO3 type case designed for general purpose switching and amplifier applications.
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. Alienware Aurora R4 Power Supply : Download Center Free Download Dell. However, the chip can deliver currents up to 1.5A which is not enough for some power applications. Download here for free in PDF format, the schematic diagram for the Foxconn. 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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