Le2_16lb - Physics 475, Laboratory 16 Power Supplies...

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Power Supplies Overview The purpose of these experiments is to use integrated circuits to generate power sources of fixed DC voltage from unregulated sources. Components The TL071 op-amp is an integrated circuit based on JFET technology that comes in an 8-pin dual in-line package (DIP). The connections for the chip looking down with the notch facing up is: The 2N2222 is a general purpose npn transistor. The 2N2222 comes in a TO-18 metal case with leads for emitter, base and collector. The 2N2222 has maximum ratings as follows: V CE <40V ,V CB <6 0V ,V EB < 6.0 V I C < 0.8 A, P = I C V CE <1W The LM317 is 3-terminal adjustable voltage regulator. The LM317 comes in a TO-39 metal case with leads for V in ,V out , and V adj . The LM317 regulates the voltage difference between V out and V adj such that it stays at 1.25 V, as long as V in >V out +2V . v + v out V + v V 1 2 3 45 6 7 8 V v + v V + v out +
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This note was uploaded on 10/02/2009 for the course PHYS 460 taught by Professor Johnson,c during the Spring '08 term at Northern Illinois University.

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Le2_16lb - Physics 475, Laboratory 16 Power Supplies...

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