400 Hertz harmonic generator
US4882551A · kind A · utility
1Cited by
9References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 11, 1989 |
| Grant date | Nov 21, 1989 |
| Priority date | — |
| Expiry date | May 11, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03B29/00
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A signal generator includes a pseudo-random bit generator that feeds bits three screening gates and three interconnected counters to simulate the electronic interference noise source attributed to three 400 hertz motors. The electronic interference effect includes fluctuations of frequencies to represent the slight variations in motor-generator speeds attributed to the 400 hertz motors so that a more realistic evaluation can be made on nearby communications and navigation equipments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.