In line signal repeaters for transmission line based electric fences
US8619838B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Mar 5, 2011 |
| Grant date | Dec 31, 2013 |
| Priority date | — |
| Expiry date | Apr 12, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B3/36
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric repeater for use in transmission line based electric fences. The electric repeater comprises a forward amplifier, a backward amplifier, a quad pole quad throw signal switch, and a monostable circuit. The short forward electric pulse in the transmission line is amplified by the forward amplifier, and the amplified electric pulse trigger the monostable circuit. The monostable circuit then outputs a n electric pulse with predetermined width. This electric pulse operates the quad pole quad throw signal switch such that the wire pair of the transmission line is connected to the backward amplifier and disconnected from the forward amplifier as soon as the forward electric pulse has passed through the forward amplifier. DC electric power is supplied to the forward amplifier and backward amplifier by the transmission line metal wire pair, and two pairs of capacitors are used to block this DC electric power from entering the input and output of the forward and backward amplifiers. A low pass filter is inserted in each of the transmission line metal wires so that short electric pulse is forced to go through the forward and backward amplifiers while DC electric power may flow thro…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.