Welcome to VisBis
VisBis is the subsidiary of Luminatek company in the business of helping other companies develop products. Our engineers have many years of experience in a wide variety of fields. We now concentrate on helping other companies engineer their power needs--batteries, power supplies, inverters and D.C. to D.C. converters.
We not only engineer products, but
we also manufacture products both in Utah and in China. This helps our
customers and keeps us in lasting, long term relationships with both our
customers and our factories. We are truing to be cost effective and sell our products to smallest mark up. Very often we modify our existing products to your needs. For our buyers from North America, please go to Powerstream website.
News/Info
Battery Capacity calculator. Dermines battery capacity (C) in ampere-hours (Ah) for 2 (two) sequential discharge events.
This calculator determines the total required battery capacity (C) in ampere-hours (Ah) for two sequential discharge events. It accounts for the load currents (I1, I2), discharge times (t1, t2), discharge rates (Rc1, Rc2), and includes corrections for non-linear effects in internal resistance at low states of charge (SoC).
Fun with CFL or UV light bulbs and electronic balast
Here we will talk about powering those light bulbs with dc "ballasts" or better say DC power supplies or converters.
Where to find energy for those who live on boat
Let's find sources of energy we need for mooring in tropical place with 28-30C during the day time and 24-27 at night. We had this article where there was a discussion where we see 1200W per day for1 person, 1600-2000W for two and 3300W with limited AC(conditioner) per day.
