Combined pacemaker delta modulator and bandpass filter

Modulators – Amplitude modulator – Nonlinear device controlled by modulating signal

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Details

375 28, H03K 1322

Patent

active

046927190

ABSTRACT:
A combined pacemaker delta modulator and bandpass filter which requires only one active device. The sense signal is applied through a conventional delta modulator capacitor to the minus input of a differential amplifier, and the conventional current sources are connected to the minus input. Instead of simply connecting the plus input to a reference potential, however, it is also coupled, through a resistor, to the input signal, and an RC network is connected across the two inputs.

REFERENCES:
patent: 4433311 (1984-02-01), Noguchi et al.
patent: 4527133 (1985-07-01), Money

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