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when working out which lead is the collector, the base, or the emitter.
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The only data that it provides me is the value of input resistance when Ic = 2mA which is 4.8kohms. Although transistors only have three leads it is very important that they should. This makes the 38V constant voltage and high power across resistor R3 and the (+) and (-) output terminals.
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The electrolytic capacitor-C2 is used for the smoothed Zener voltage. I would like to compare my calculated result with a datasheet value to validation purposes but the BC108 datahseet provides no graph whatsover for me to make this validation. The 40V Zener Diode-ZD1 keeps the voltage constant across the base of BD139 NPN transistor-Q1 and Q2-2N3055 as the Darlington form. As both these input impedance values are almost the same from both transistors,my question is will input resistance values for different types of transistors be approximately similar at the same values of Ic? However I used the BC108 for this experiment. Features High CurrentGain Bandwidth Safe Operating Area These Devices are PbFree and are RoHS Compliant MAXIMUM RATINGS (Note 1) Rating Symbol Value Unit CollectorEmitter Voltage 2N3055AG MJ15015G, MJ15016G VCEO 60 120 Vdc CollectorBase Voltage 2N3055AG MJ15015G. I calculated the input resistance from my graph and got a value of 1.25k ohms when Ic = 5mA. requiring higher safe operating area than the 2N3055. Type: NPN Collector-Emitter Voltage: 60 V Collector-Base Voltage: 100 V Emitter-Base.
#Transistor base emitter collector identification 2n3055 how to
I observed the input impedance graph of the 2n3904 and got the corresponding input resistance of 1kohm for Ic=5mA How to Identify the Pins of 2N3055 Transistor - YouTube.