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THERMAL_CONSTANTS_OF_TRANSISTORS

2016-05-07 08:23  
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THERMAL_CONSTANTS_OF_TRANSISTORS
Astable mvbr generates 0.3-sec pulse every 3 sec to drive mercury relay when mode switch is on IC contacts for measuring thermal lime constant of transistor under test. Constant power is applied between pulses, using cro as guide for keeping power level near normal steady-state value of transistor. Thermal resistance data is obtained with mode switch on contact TR, where 60-cps supply drives relay.-H. Bauman, Practical Way to Measure Transistor Thermal Resistance, Electronics, 36:7, p 66-67.