Main operated electric fence energizer
US5742104A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 1996 |
| Grant date | Apr 21, 1998 |
| Priority date | — |
| Expiry date | Aug 22, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05C1/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric fence energizer is operated by an alternating current and has two storage capacitors (C.sub.1, C.sub.2), which are charged by a charging circuit (7) to a high voltage. The storage capacitors (C.sub.1, C.sub.2) are discharged through separate primary windings (L.sub.1, L.sub.2) in a transformer (T) and the secondary winding (L.sub.3) of the transformer is connected to the electric fence. The discharging processes are controlled by separate discharging circuits (R.sub.1, T.sub.y1 ; T.sub.y3 and T.sub.y3 respectively), so that for light loads only one of the storage capacitors (C.sub.1) is discharged, and for heavy loads also the other one (C.sub.2) is discharged starting a short time after the start of the discharging of the first one and during the same discharge cycle. Sense circuits (L.sub.2, R.sub.8, R.sub.9, C.sub.3, R.sub.10, R.sub.11, R.sub.12, T.sub.4, R.sub.13) provide signals PCHL; PPUL) to a microprocessor (7) and they represent the load on the transformer (T). One of the sense circuits (L.sub.2, R.sub.8, R.sub.9, C.sub.3) comprises the second primary winding (L.sub.2) and is used for measuring light loads. It controls, whether the second storage capacitor C.su…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.