High dielectric output circuit for electrosurgical power source
US4520818A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 28, 1983 |
| Grant date | Jun 4, 1985 |
| Priority date | — |
| Expiry date | Feb 28, 2003 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B18/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A transformer circuit including a primary coil with first and second voltage divider segments arranged in phase with equal inductances and a plurality of taps on the second segment. A switch is used to selectably ground one of the taps for varying the voltage impressed on the second segment. The transformer also has a secondary coil including first and second voltage divider segments arranged 180.degree. out of phase and having equal inductance. The secondary coil is heavily insulated, and the primary and secondary coils are coupled together to provide an output equal to the sum of the voltages applied to the segments of the secondary coil so that the transformer output can be varied by switching from one tap to another of the second segment of the primary coil and that the secondary coil can be heavily insulated and isolated from ground.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.