4 ms·

I did a quick search on google patents: https://www.google.com/patents/US9084035 https://www.google.com/patents/US9084035 - it uses a combination of AC and DC m

by sdk77 11y ago

I did a quick search on google patents: https://www.google.com/patents/US9084035 https://www.google.com/patents/US9084035 - it uses a combination of AC and DC methods.