The company’s planar common mode inductors are also safe for use on the dc side of an inverter in photovoltaic systems and other dc systems. The components range in inductance value from 1 mH to 10 mH with current ratings from 2A to 50A. They attenuate harmonics in the frequency range of 100 Hz to 100 MHz. Pricing starts at $5 each/500. MINA INC.., Providence, RI. (972) 699-9976.