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PayPal Buyer Protection Protecting Your Purchase from Click to Delivery Option 1) Full Refund if you don't receive your order Option 2) Full or Partial Refund, if the item is not as described. MC34181 serves as a voltage comparator. TESTER of the chip UC3843 & similar pinout ICs WITH VISUAL CONTROL + ZENER / TVS/ TL431 referenc. com , IC integrated circuit on sale at cheapest price. on Alibaba. Datasheet could help you alot. pdf is a datasheet. They are specifically designed for Off−Line and DC−DC converter applications offering the designer a cost−effective solution with minimal external components. Zeszyty Problemowe - Maszyny Elektryczne Nr 84/2009 7 Ján Kaňuch, Peter Višnyi Technical University of Košice, Koszyce DC DRIVE FOR UNIVERSAL MOTOR Abstract: Universal motors are usually operated in AC mode and are controlled by means of triacs.