Cheap And Discounts DC-DC High Voltage Capacitor Charging Step Up Boost Module DC 8-32V to 45V-390V ±45-390V Converter Board Adjustable Regulator Wholesale. Buy Directly From Merchant FYD Open Source Hardware. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.