Exam 16: Regulators, Filters, and Op-Amps

Hartley and Colpitts oscillators can use op-amps.

Figure $18 < 1$ -A CMRR of 35,000 equals a decibel CMRR of ________.

$\text { Figure } 17 < 2$ -If I_D=15 mA in Figure 17-2, V_GS equals_____

What is the total voltage gain of a three-stage amplifier that has stage gains of 17, 142, and 4?

$\text { Figure } 16<2$ -Which block in Figure 16-2 changes ac to pulsating dc?

A DC voltage that sets the operating conditions of a semiconductor device is called the ________.

Although BJT transistors are current operated devices, a key characteristic is the signal voltage gain as an amplifier specified as:

The two types of BJTs are the NPN and PNP.

Figure $18 < 1$ -If $\mathrm { R } _ { f } = 333 \mathrm { k } \Omega$ and $\mathrm { R } _ { \mathrm { i } } = 22 \mathrm { k } \Omega$ in Figure 18-1(b), the voltage gain equals________

Figure $18 < 1$ -If $\mathrm { R } _ { f } = 150 \mathrm { k } \Omega$ and $\mathrm { R } _ { \mathrm { i } } = 10 \mathrm { k } \Omega$ in Figure 18-1(c) , the voltage gain equals________

When a diode is forward biased it is ________.

(a) (b) (c) Figure $16 < 1$ -What is the current through R₂ in Figure 16-1(c) if the diode is silicon?

To generate light, an LED requires:

The Class B amplifier conducts for__________ of the input cycle.

The input frequency of a single-pole, low-pass active filter increases from 1.5 kHz to 150 kHz. If the critical frequency is 1.5 kHz, the gain decreases by ________.

The output of an op-amp differentiator depends on the values of ________ and ________.

Reverse breakdown usually occursW hen a diode is forward biased by about 0.7 V.

What type of amplifier normally has a voltage gain of one?

One characteristic of a voltage follower is its ________.

If a half- Wave rectifier outputs 58 VP, the diodeʹs PIV should be more than ________.