Circuit arrangement for the processing of physiological measuring signals
US3991748A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 19, 1975 |
| Grant date | Nov 16, 1976 |
| Priority date | — |
| Expiry date | Jun 19, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R17/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A circuit arrangement for the processing of physiological measuring signals, including a plurality of input amplifiers having branch signal electrodes connected thereto and to which there are subsequently connected differential amplifiers, each of the latter being connected to the outputs of at least two input amplifiers by means of a program selector and pursuant to a preselected program, and in which it becomes possible to effect a screening or testing of the various circuit elements and, thereby, also of the input amplifiers. A manually controllable calibrating impulse generator is connected to the inputs of all input amplifiers so as to increase the input voltages of the input amplifiers, each differential amplifier including an additional calibrating input to which there is transmissible a calibrating signal from the calibrating impulse generator and wherein, in each differential amplifier, the signal at the calibrating input is superimposed on the differential signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.