Optically coupled semiconductive switching devices
US3938173A · kind A · utility
11Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 3, 1974 |
| Grant date | Feb 10, 1976 |
| Priority date | — |
| Expiry date | May 3, 1994 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F55/25
Abstract
This relates to an optically isolated switching device made by coupling the output of a light emitting diode into a thyristor. Sensitivity is determined by optical flux density rather than total flux. Improved sensitivity is obtained with a mesa construction of a diode mounted on and bonded to a thyristor at a window in its cathode via a glass preform having a high refractive index.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.