The NLFA is a multiple element device allowing several useful field configurations.
The three internal elements, one low frequency amplifier, two notch amplifier each with the cut off freq. of 50Hz (or 60Hz for a specific version) can be used as independent ones or combined together to increase the notch function. The effect of the cascade of two notches is the increasing of the signal attenuation for the notch frequency.
Techimp NLFA Notch Low Frequency Amplifier
Product comes new from manufacturer, avialable in 4-6 weeks. Contact us for quote and more info.