Electronic Load Using Power BJT Transistors

One problem, or should we say challenge, in designing this type of circuit is to ensure that the Darlington pair transistors are not overstressed by causing them to dissipate too much power. The maximum power the transistor can dissipate decreases with increasing collector-emitter voltage. 

Advantages BJT transistors less expensive (typically) than MOSFET transistors Disadvantages Extra circuitry required to create power limiting of transistors 

Pile names load (IsSpice), psJoad (PSpice), load-mc (Micro-Cap) 

Parker, Sybil, ed. 1984. Concise Encyclopedia of Science and Technology. New York McGraw-Hill. 

Texas Instruments. 1992. Linear Circuits Data Book (Vol. 3). 

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