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

CFL and UV lights usage

CFL and UV lights usage

In the new era of LED (Light Emitting Diodes), most of consumers start forgetting CFL (Compact Fluorescent Lamp) & CCFL (Cold Cathode Fluorescent Lamp). ...apparently fluorescent tubes received second life.
Can I get battery capacity by knowing my need for powering load?

Can I get battery capacity by knowing my need for powering load?

Let's assume we have some load with current I to run for time t. Can we  get needed battery capacity C? Attention, this calc is for lead acid battery.
Solar Power and Angles of Panel

Solar Power and Angles of Panel

After many years of usage and research around this subject, I came to a few simple conclusions.1. It is the best to simplify your solar energy system. This conclusion is also concern the solar tracking devises.
Solar panel calculator if you know the dimentions and the material.

Solar panel calculator if you know the dimentions and the material.

Calculations based on simplified formula for solar panel power: Pout = η ⋅ G ⋅ (X ⋅ Y)

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