The PWR-FILTER is a filter that is able to eliminate electrical disturbance on the power supply line of electronic boards powered with continuous voltages up to 30V. Electrical disturbance is often the main cause for operating anomalies or even damages to the boards powered.

Thanks to the double filter structure + varistor of the PWR-FILTER unit, both the overvoltages (spikes) capable of damaging the circuits powered and also continuous disturbance, which alter their operation or precision, can be eliminated.
The drawing below illustrates the block diagram of the PWR-FILTER.

The following sections can be seen:

spikes suppressor: it eliminates all the overvoltages with amplitude greater than 40V; it is therefore suitable for eliminating disturbance generated by limited inductive loads in insufficient quantity. 1st and 2nd filter: they eliminate the instant and continuous disturbance generated, for example, by converters or inverters that are not filtered appropriately (see illustration on following page)

TECHNICAL DATA

The PWR-FILTER effectiveness

The illustration above shows the filtering effect of the PWR-FILTER on a power supply line. The graph was detected by a digital 2-trace oscilloscope. The lower trace (channel 2) shows the input signal sent from a 24 Vdc power supply line on which there is continuous disturbance of 3.22Vpp. The higher trace (channel 1) on the other hand shows the signal taken from the filter output.

As you will notice, disturbance on the filter outlet is particularly muffled (15.2mVpp), to such an extent that it is negligible for the system downstream from the PWR-FILTER.