###### Foundations of Oscillator Circuit Design

63 SOLVED PROBLEMS

Question: 3.1

## Design the Pierce oscillator in Figure 3.3(a) to oscillate at 1 MHz. Use the 2N3819 n-channel JFET. This transistor has the following typical parameter values: IDSS = 12 mA and VP = −3.5V. ...

Selecting the Q point at $I_{D}$ = 6 ...
Question: 3.12

## Calculate vo (t) for the GG oscillator designed in Example 3.3. ...

In the oscillator of Example 3.3 (refer to Figure ...
Question: 3.11

## (a) A design for the GB oscillator in Figure 3.27(b) at fo = 1.5 MHz is shown in Figure 3.46. For this design, calculate the oscillation waveform of vo (t). (b) Calculate vo (t) if the load resistor is changed to 20 kΩ. ...

(a) For this oscillator the feedback factor is [la...
Question: 3.10

## Design the op-amp Pierce oscillator in Figure 3.33 to oscillate at 10 kHz. ...

The op amp used is a general-purpose op amp, such ...
Question: 3.9

## Design the Clapp oscillator in Figure 3.30a to oscillate at 10 MHz. ...

The BFS17P BJT was selected for this design. This ...
Question: 3.8

## Design the GB oscillator in Figure 3.29(a) to oscillate at 10 MHz. The transistor (a 2N3904) has β = 100 and it is to be biased at IC = 1 mA. ...

With $I_{C}=1\;{\mathrm{mA}},$ it fol...
Question: 3.7

## Design the BJT Hartley oscillator in Figure 3.25(b) to oscillate at 1 MHz using the 2N3904, a general purpose BJT. The Q point is to be at VCE = 6V and IC = 3 mA. The 2N3904 lists fT > 300 MHz and a typical beta of 100. ...

Let $V_{C C}=12\mathrm{V},$ then [lat...
Question: 3.6

## Design the Colpitts oscillator in Figure 3.22(a) to oscillate at 1 MHz. ...

Let $C_{1}=C_{2}=$ = 10 nF, so that [...
Question: 3.5

## The BJT Pierce oscillator shown in Figure 3.19(a) was designed using a 2N2907 BJT with VCC = 15 Ω, R1 = 12 kΩ, R2 = 6 kΩ, RE = 500 Ω, Ce = Cc2 = 0.1 μF,C1 = 50 nF, C2 = 500 pF, L = 300 μH, and the collector resistor Rc was replaced by an RFC whose inductance is 20 mH. Determine the frequency of ...

The 2N2907 transistor lists J_{F E} (\mathr...