Design and manufacture of power supplies, battery charger, UPS and battery packs. Offers compliance testing services.PowerStream Power Supplies and Chargers for OEMs in a Hurry Welcome to PowerStream PowerStream is a Lund Instrument Engineering, Inc. Company. Lasting Relationships are the ones that pay off. Best viewed with frames! Site map PowerStream Technology is in the business of helping other companies develop products. Our engineers have many years of experience in a wide variety of fields. They have developed products from laser range finders to security switches. We now concentrate o