Hello
I am designing an external battery pack to power an ECG amplifier. The ECG amplifier does not have a notch filter and the adapter used to power it does not have a 'GND' pin. The same adapter is being used to recharge the external battery pack as well. So i still have the powerline noise and i have a possibility of removing the powerline (50/60Hz) noise in the external battery pack i am designing.
The input for the external battery pack is 12V--4A so using a RC lowpass/notch filter to remove the noise would dissipate a lot of heat. I wanted to know if there is any special kind of ic/circuit to remove this powerline (50/60Hz) noise from the power supply. The 50/60Hz interference problem occurs from the AC mains whilst charging the battery pack and using the ECG simultaneously.
Thank You
Shravan Raghu
I am designing an external battery pack to power an ECG amplifier. The ECG amplifier does not have a notch filter and the adapter used to power it does not have a 'GND' pin. The same adapter is being used to recharge the external battery pack as well. So i still have the powerline noise and i have a possibility of removing the powerline (50/60Hz) noise in the external battery pack i am designing.
The input for the external battery pack is 12V--4A so using a RC lowpass/notch filter to remove the noise would dissipate a lot of heat. I wanted to know if there is any special kind of ic/circuit to remove this powerline (50/60Hz) noise from the power supply. The 50/60Hz interference problem occurs from the AC mains whilst charging the battery pack and using the ECG simultaneously.
Thank You
Shravan Raghu