Digital phase lock loop stimulation generator
US5465109A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 22, 1991 |
| Grant date | Nov 7, 1995 |
| Priority date | — |
| Expiry date | Nov 22, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/02
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A system for controlling the formation of droplets in a fluid stream includes a continuously flowing fluid stream through a droplet generator. The system further includes both a sinusoidal drive voltage at a predetermined frequency and a plurality of piezo electric crystals for causing the droplet generator to resonate and inducing a series of uniformly sized droplets to separate at regular intervals from the droplet generator. Finally, the system includes a drive signal for adjusting to the resonance of the droplet generator to control the formation of the droplets. The drive signal is applied to the crystals by a digital phase lock loop.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.