Wide Swing Variable Crystal Oscillator:   (added 2/05)

10.58 to 10.74 MHz VFO Oscillator :   (Electronic circuit design added 02/05)

2 Stage Chaotic Colpitts Oscillator for the UHF range:   (Electronic circuit design added 02/05)

4 Transistor Tracking Transmitter:   (Electronic Schematic / circuit added 4/02)

4 Transistor Transmitter:   (added 8/03)

Acolpitts VCO for Wideband (0.95-2.15 GHz) Set-Top TV Tuner Applications:   Alpha Industries Application Note 1006 (Electronic circuit design added 02/05)

Audio Circuit:   (Electronic circuit design added 02/05)

Basics of Oscillators:   Sohpomore Physics Laboratory California Institute of Technology, July 2003 (Electronic circuit design added 02/05)

Crystal Oscillators and Frequency Multipliers using the NE602 and NE5212:   Philips Semiconductors Application Notes 1983, December 1991 (Electronic circuit design added 02/05)

CX Minature Crystals Circuits:   Euro QuartzCX-6V-SM (Electronic circuit design added 02/05)

LC (Colpitts) Oscillator operates on 0.5V to 5V Single Supply:   Circuit Ideas for Designers - Application Notes - Advanced Linear Devices, Inc.  (Circuit / schematic design added 6/06)

NanoPower LC (Colpitts) Oscillator Circuits:   Circuit Ideas for Designers - Application Notes - Advanced Linear Devices, Inc.  (Circuit / schematic design added 6/06)

Oscillator Circuit Types:   (Electronic circuit design added 02/05)

Positive Feedback:   The use of positive feedback is useful for producing oscillators. The condition for positive feedback is that a portion of the output is combined in phase with the input. For an amplifer with positive feedback the gain is given by the expression below. (Electronic circuit design added 02/05)

Resonant Frequency of a Colpitts Oscillator:   (Electronic circuit design added 02/05)

Trimless IF VCO part 2:   Maxim Application Note 688, February 5, 2001 (Electronic circuit design added 02/05)

Trimless IF VCO: Part 1: Design Considerations:   This application note explores the design fundamentals needed to implement a trimless, fixed-frequency, IF voltage-controlled oscillator (VCO) and points out the challenges in guaranteeing proper circuit operation. VCOs are essential components in the architecture of most wireless systems. In dual-conversion approaches, a fixed-frequency IF VCO is required to control the frequency translation from IF to baseband and/or baseband to IF.   APP 711: Feb 05, 2001  (Electronic circuit design added 02/05)

Two Stage Chaotic Colpitts Oscillator for the UHF range:   (Electronic circuit design added 02/05)

Ultra Low Voltage Nanopower LC (Colpitts) Oscillator Circuit:   Circuit Ideas for Designers - Application Notes - Advanced Linear Devices, Inc.  (Circuit / schematic design added 6/06)

Use of the CMOS Unbuffered Inverter in Oscillator Circuit:   Texas Instrument Application ReportSZZA043 January 2004 (Electronic circuit design added 02/05)

Voltage Controlled Oscillator ( VCO ):   The oscillation frequency of the voltage controlled oscillator is controlled by the output of the PLL synthesizer and does the stable oscillation of 119.3 MHz.  (Electronic circuit design added 02/05)