Tru-Test Corporation Limited

Pieter Cornelis Lunenburg

Robert Charles Bryan Woodhead

John Murphy

Lawrence Frederick Blount

An energiser for an electric fence. The energiser includes, at least, one energy storage capacitor (), a charging circuit () to enable the or each storage capacitor () to be charged from an energy source (), semiconductor switching means (), and control circuit means () to facilitate controlled turning -on and -off of the semiconductor switching means () to control the duration of the discharge from the energy storage means (). In one form of the energiser a first semi-conductor switching means is arranged to connect in parallel the energy storage capacitors () to be charged and second semi-conductor switching means to connect two or more of the charged energy storage capacitors () in series to create an output pulse.

Electric fence energiser

Weighing apparatus, which includes one or more loadbarsand a weight indicator. Communication between the loadbarsand the indicatoris via a wireless communication. The indicatorincludes a receiverand data from the loadbaris transmitted to the receivervia transmitter. A sealed power source moduleis connected to the loadbarsor one power source moduleis connected to each loadbar. The transmittercan be incorporated in the power source

Weighing systems

A data transmission system which is particularly useful for a remote control apparatus for an electric fence. The apparatus includes a portable hand held housing with a contactwhich in use can contact a conductor of an electric fence line. The output of the apparatus includes a resonating circuit with inductor L, transformerand a small high voltage capacitor C. The apparatus can thus generate information embedded within a series of short signal bursts of a frequency within a predetermined frequency range. A receiver coupled to or forming part of an electric fence energizer can receive a signal from the apparatus to control operation of the energizer.

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Waiuku, New Zealand

Pieter Cornelis Lunenburg