Radiation protection circuit for protection against gamma ray and neutron radiation
US4794261A · kind A · utility
130Cited by
3References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 24, 1987 |
| Grant date | Dec 27, 1988 |
| Priority date | — |
| Expiry date | Apr 24, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F55/25
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit for protecting a protected circuit against radiation has a PIN diode series coupled to a laser, which is optically coupled to a photodiode. The photodiode is coupled to the protected circuit. When radiation occurs, the resistance of the PIN diode increases, which causes the laser to cease emitting light. In turn, the resistance of the photodiode increases, thereby decreasing the current from a power supply through the protected circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.