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What Is The Purpose Of Diode In Differential Amplifier With Constant Current Circuit? |
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Answer» The BASE emitter VOLTAGE of transistor (VBE) in constant current CIRCUIT by 2.5mv/oc, thus diode ALSO has same TEMPERATURE. Hence two variations cancel each other and total current IQ become in depend of temperature. The base emitter voltage of transistor (VBE) in constant current circuit by 2.5mv/oc, thus diode also has same temperature. Hence two variations cancel each other and total current IQ become in depend of temperature. |
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