Electronic Oscillator Circuits
The oscillator circuits presented on this page are from expired or non-maintained U.S. Patents.  All
circuits are presented in "Electronic Workbench 5.12" or "Multisim 7 circuit simulation formats".
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An Eddy Current Sensor Circuit based on U. S. Patent
3,609,580
Oscillator Circuit One based on U. S. Patent  
3,205,352
Oscillator Circuit Two based on U. S. Patent
3,732,503
Oscillator Circuit Three based on U. S. Patent  
4,099,116
Oscillator Circuit Four based on U. S. Patent
4,204,160
Oscillator Circuit Five based on U. S. Patent
4,286,704
Oscillator Circuit Six is based on U. S. Patent
4,053,849
Oscillator Circuit Seven based on U. S. Patent
4,325,027
Oscillator Circuit Eight based on U. S. Patent 4,204,160  
Figure One
Oscillator Circuit Nine based on U. S. Patent
3,513,408
A note on spice simulation of
electronic oscillator circuits. All of
the oscillator circuits presented on
this web page have been simulated
using either Electronic Workbench
5.12 or Multisim 7 electronic spice
programs. All of the circuits will
oscillate using the simulator
schematics as shown.. It is
unknown if the circuits will oscillate
on other brands of spice circuit
simulators. If you have problems
getting your circuit to oscillate on
your simulator, You can to email
questions to me at bob@luetzow.us.

This web page is basically about  
electronic oscillator circuits and
how to demonstrate the circuit's
oscillating functions using spice
software.  The position sensing
oscillators were selected because
they are all expired patents and are
in the public domain.
Oscillator Circuit Ten is based on U. S. Patent
3,701,041
Oscillator Circuit Eleven is based on U. S. Patent  
3,842,324
These oscillator circuit patents can
be located on the U.S. Patent
Web Site in Class 331, Subclass
65 patents.
Oscillator Circuit Twelve is based on U. S. Patent
4,310,807
Oscilllator Circuit Thirteen is based on U.S. Patent
3,474,332
Oscillator Circuit Fourteen is based on U. S. Patent
3,808,524
Oscillator Circuit Fifteen is based on U.S. Patent
4,323,847
Oscillator Circuit Sixteen is based on U. S. Patent
3,164,802
Oscillator circuits one, six, eleven,
and sixteen have been built using
the part values indicated by the
simulated spice schematic.  All
four of the circuits oscillated and
worked correctly when they were
turned on the first time.
Making an electronic oscillator circuit simulation
oscillate
Oscillator Circuit Seventeen is based on U. S. Patent
3,743,853
Oscillator Circuit Eighteen is based on U. S. Patent
4,267,522
Oscillator Circuit Nineteen is based on U. S. Patent
3,826,973
Oscillator Circuit Twenty is based on U. S. Patent
3.935,542
Oscillator Circuit Twenty-One is based on U. S. Patent  
4,439,734
Oscillator Circuit Twenty-Two is based on U. S. Patent 3,851,242  
Figure One
This schematic shows how to use a signal voltage source (V1) and a coupling capacitor
(C1) to help an oscillator circuit to start oscillating.  The oscillator circuit's part values can
be adjusted to secure the best oscillating characteristics.  Everytime the circuit values are
adjusted, lower the value of C1. When C1 is lowered to 1 pF, and the circuit still oscillates
correctly,  remove C1 and V1 from the circuit.
Oscillator Circuit Twenty-Three is based on U.S. Patent
3,226,634
Click Here to view an Eddy Current position
sensor electronic circuit.
Click here to read a Notice about the technical information on this page.
Oscillator Circuit Twenty-Four is based on U.S. Patent
4,053,849