Exam 16: Oscillators

The equivalent circuit for a quartz crystal is a series- parallel RLC circuit.

Figure 6 -Refer to Figure 6. The circuit can be configured as a VCO by applying

Figure 1 -Refer to Figure 1. The JFET acts as a

Figure 2 -Refer to Figure 2. The portion in the dashed box is

The major advantage of crystal oscillators is its accuracy and stability.

Figure 2 -Refer to Figure 2. The circuit is

Figure 3 A simplified oscillator circuit. -Refer to Figure 5. This is an example of a

Figure 1 -Refer to Figure 1. The output of the circuit when adjusted properly is a

Figure 3 A simplified oscillator circuit. -Refer to Figure 3. The fraction of the output that is fed back is

Figure 3 A simplified oscillator circuit. -Refer to Figure 3. Assume the circuit is working normally; the output frequency is approximately

Figure 2 -Refer to Figure 2. Rf determines the

Figure 1 -Refer to Figure 1. Assume the frequency of Vout is 6.0 kHz and R1 = R2. The value of each of these resistors is

A VCO uses a control voltage to set the output amplitude.