Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1996-07-19
1998-08-04
Zimmerman, Brian
Communications: electrical
Condition responsive indicating system
Specific condition
256 10, G08B 1316
Patent
active
057900230
ABSTRACT:
An electric fence controller and method of controlling the energization of an electric fence. The controller includes a digital timing circuit which generates a digital signal to control the activation of a switching circuit for applying energy from an external power source across the primary winding of a transformer. The power source may be an alternating current source, the cycles of which are located by the timing circuit which activates the switching circuit after a selected number of cycles are counted driving an off-time period. Alternatively, the power source may be a direct current source and the timing circuit may include an oscillator and a counter for counting the number of oscillations and generating a digital signal which activates the switching circuit during an on-time period corresponding to a first selected number of oscillations, the switching circuit being inactive during an off-time period corresponding to a second selected number of oscillations.
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Ondler Danny M.
Wolfgram Kirk W.
Wyatt Gerald D.
Waters Instruments Inc.
Wong Albert K.
Zimmerman Brian
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