Alterable frequency response electrocardiographic amplifier
US4494551A · kind A · utility
30Cited by
13References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 12, 1982 |
| Grant date | Jan 22, 1985 |
| Priority date | — |
| Expiry date | Nov 12, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/902
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An electrocardiographic amplifier having an integrator in the feedback loop between the amplifier's input and output whose time constant is varied by the duty cycle of a series switch to vary the low frequency 3 dB roll-off point as a function of the detected low frequency noise in the amplifier output signal. A capacitor is switched in parallel with the inverting feedback resistor to lower the high frequency 3 dB roll-off point in response to detected high frequency noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.