base voltage sentence in Hindi
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- By convention, there are actually two different base voltages that are chosen, V and V which are equal to the rated voltages for either side of the transformer.
- When the input voltage ( Q1 base voltage ) rises slightly above the voltage across the emitter resistor R E ( the high threshold ), Q1 begins conducting.
- When the voltage of C1 right-hand plate ( Q2 base voltage ) becomes positive and reaches 0.6 V, Q2 base-emitter junction begins diverting a part of R2 charging current.
- The output voltage is about 0.65V less than the base voltage, which in turn is about 2 & ndash; 3 V less than V S ( when loaded ).
- There is a full ( 100 % ) negative feedback; the two input base voltages and the emitter voltage change simultaneously while the collector currents and the total current do not change.
- He designed a DXing radio receiver when he was 14, which never worked; however, he designed his own SMPS based voltage regulator for the genset, after which it was accepted by the army.
- If the input current is increased, then the collector voltage falls below the base voltage, and the Shottky diode starts to conduct and shunt some of the base drive current into the collector.
- An increase in the collector base voltage, for example, causes a greater reverse bias across the collector base junction, increasing the collector base depletion region width, and decreasing the width of the base.
- As it exceeds the voltage required to bias the emitter-base junction of Q3, Q3 acts as an emitter follower or common collector amplifier and the base voltage of Q1 and Q2 begins to rise.
- However, even with a fixed base voltage, collector current varies with temperature ( for example ) so an emitter resistor is added to stabilize the Q-point, similar to the above circuits with emitter resistor.
- :If the external emitter resistance is small or zero, then you really can't use a constant base voltage as a bias as it makes things way too sensitive to variations in R E and ?.
- The feedback amplifier maintains the emitter voltage equal to the input voltage, so the base voltage is one V BE drop above that and the emitter current I E is always proportional to the input voltage.
- The problem is that because of the high gain ( presuming a silicon device ), only a minute rise and fall in base voltage is sufficient to turn the transistor on and off ( respectively ).
- One advance let a relatively small base voltage excite a full flow of electrons that had no fluctuations, allowing transistors to act as on-off switches, or, in mathematical terms, " 0 " and " 1 ."
- If you hold the base at a constant voltage ( relative to the circuit's overall V CC ), then the emitter "'must "'be about one diode drop ( so, usually, about 0.6v ) below the base voltage.
- There is no negative feedback since the emitter voltage does not change at all when the input base voltages change . " he common quiescent current vigorously steers between the two transistors and the output collector voltages vigorously change.
- Intuitively, this behavior can be also understood by realizing that the base-emitter voltage in the bipolar transistor is very insensitive to bias changes, so any change in base voltage is transmitted ( to good approximation ) directly to the emitter.
- :IMO this is not really a good switch circuit ( unless the base voltage is slightly greater than the positive supply voltage ) because the voltage applied to the load can only be about 0.6 v below the base voltage and the transistor cannot saturate.
- :IMO this is not really a good switch circuit ( unless the base voltage is slightly greater than the positive supply voltage ) because the voltage applied to the load can only be about 0.6 v below the base voltage and the transistor cannot saturate.
- The Miller effect negatively affects the performance of the common source amplifier in the same way ( and has similar solutions ) . When an AC signal is applied to the transistor amplifier it causes the base voltage VB to fluctuate in value at the AC signal.
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