Practical Electronics: A Self-Teaching Guide (Wiley Self-Teaching Guides) by Ralph Morrison

Author:Ralph Morrison
Language: eng
Format: epub
Published: 2010-03-02T13:41:00+00:00

SELF-TEST

1. A constant current source provides 5 V into 1,000 S2 and 9.992 V into 2,000 Q. What is the source impedance?

2. A constant voltage source provides 5 V into 1,000 S2 and 4.992 V into 500 Q. What is the source impedance?

3. A 50-kHz square wave voltage at 10 V peak is half-wave rectified. How large must the filter capacitor be if the voltage can sag 0.1 V in a half-cycle for a 200-mA load?

4. A differential stage has a voltage gain of 40 from each emitter to each collector. The collector voltages for equal input signals are 9 V. The emitter to base voltage is always 0.6 V. Assume the positive input is 2.5 V and the negative input is 2.45 V. What is the emitter voltage without signal? What is the emitter voltage with signal?

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