EPEmag
Practical Oscillator Designs

Oscillators are crucial to the working of all but the most mundane of electronic equipment. Like beating hearts, they send out the impulses that give life to radio transmitters and receivers, computers, frequency counters, calculators, timers, oscilloscopes, and signal generators of all kinds.

For anyone who ever wanted to understand the mysteries of oscillators, this superb series is prepared with the electronics enthusiast and experimenter very much in mind and is intensely practical. Tried and tested circuits are fleshed out with component values, and their vices and virtues are exposed.

The entire series was published between July 1999 and December 1999. All six of these issues are available on the EPE Online Back Issues Vol 2 mini-CD which is available from the EPE Online Store

The following offers a high-level overview of the topics covered in each article (note that more subjects are discussed than are referenced here).


Part 1: July 1999 The Hartley Oscillator and its Variants
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July 1999 The Hartley Oscillator and its Variants
Defining and Classifying
Maintaining Oscillation
Tuned Circuits
Q-Factor
Hartley Oscillators
Beat Frequency Oscillators
Lampkin Oscillators
Dow Oscillators


Part 2: August 1999 The Colpitts Oscillator and its Variants
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August 1999 The Colpitts Oscillator and its Variants
Colpitts Oscillators
Wide Range Colpitts
Narrow Band Colpitts
Seiler Colpitts Variant
Clapp's Colpitts Variant
Vackar Colpitts Variant
Dow Variant
Goral Variant


Part 3: September 1999 The Armstrong, Meissner, Franklin and Butler Oscillators
(plus RF Probes)

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September 1999 The Armstrong, Meissner, Franklin and Butler Oscillators
Armstrong Oscillators
Meissner Oscillators
Franklin Oscillators
Butler Oscillators
RF Probe for Digital Test Meters
RF Probe for Moving Coil Meters


Part 4: October 1999 Negative Resistance Oscillators
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October 1999 Negative Resistance Oscillators
Maintaining Oscillations
Tunnel Diodes
50kHz Oscillator
Two Transistor Oscillator
FET Oscillator (100kHz to 30MHz)
Bioplar Oscill (100kHz to 30MHz)


Part 5: November 1999 Crystal & Crystal Controlled Oscillators
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November 1999 Crystal & Crystal Controlled Oscillators
Pierce Oscillators
Logic Oscillators
Clapp Oscillators
Colpitts Oscillators
Miller FET Oscillators
Butler Oscillators
Harmonics and Overtones


Part 6: December 1999 Resistor/Capacitor Oscillators
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December 1999 Resistor/Capacitor Oscillators
Relaxation Oscillators
Phase-Shift Oscillators
Wide-Range AF Generator
CMOS Square Wave Gen
Simple Pulse Generator
Simple Sawtooth Generator
Linear Sawtooth Generator

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