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Low Vce sat BJT Power Savings Slide 10

The circuit at the top of the slide can be simplified with the use of a low VCE(sat)  BJT. When operating at a beta of 100, the transistor has a VCE(sat) of 100mV. The dissipated power for the collector current would be 100mW, while the base current would be 33mW. The total power loss would be 133mW.

PTM Published on: 2011-12-07