Patent · US Active

Transformerless ultrasonic transducer activation with only one external energy store

US11389831B2 · kind B2 · utility

0Cited by

2References

2Claims

0Family size

Assignee

ELMOS SEMICONDUCTOR SE · DE

Inventors

Guido Schlautmann · Altenberge, DE
Andre Schmidt · Herzogenaurach, DE
Stefanie Heppekausen · Essen, DE

Key dates

Filing date	Jan 22, 2021
Grant date	Jul 19, 2022
Priority date	—
Expiry date	Apr 9, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH03K17/51
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Disclosed is a driver stage for activating a first ultrasonic transducer and a method for the operation thereof. The driver stage comprises a first charge pump or power source and a first capacitor. The driver stage also comprises first means for charging the first capacitor with electrical energy from the charge pump and second means for connecting the first capacitor and ultrasonic transducer to different polarities. The first means do not charge the first capacitor with energy from the charge pump or power source when the first capacitor is connected to the ultrasonic transducer by the second means.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.