A voltage sensing system includes input impedance balancing for electrocardiogram (ECG) sensing or other applications, providing immunity to common-mode noise signals while capable of use with two electrodes. Signals are received at first and second electrodes having associated impedances. An impedance...http://www.google.es/patents/US6208888?utm_source=gb-gplus-sharePatente US6208888 - Voltage sensing system with input impedance balancing for electrocardiogram (ECG) sensing applications
Voltage sensing system with input impedance balancing for electrocardiogram ...
