第九章单元测试
Calculate the low frequency break point due to the capacitor
for this BJT amplifier. （ ）
If several identical stages of amplifiers, each having the exact same upper and lower cutoff frequencies, are connected in cascade, then the bandwidth of the resulting amplifier will （ ）.
A 3-dB drop in β occurs at （ ）.
Negative dB values represent （ ）.
An amplifier has a midband power gain of 24,500. What is the value of the power gain in dB for the circuit? （ ）
A:
B:
C:
D:
答案:
A:be equal to the sum of all the individual bandwidths B:remain unchanged C:increase D:decrease
A:
B:
C:
D:
A:power losses B:power values that do not change C:power gain
A:87.78 dB B:43.9 dB C:4.39 dB
温馨提示支付 ￥3.00 元后可查看付费内容,请先翻页预览!
