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

Fun with CFL or UV light bulbs and electronic balast

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.
Lithium Battery replacement

Lithium Battery replacement

How do I replace Li battery and make my device functional again?
Solar Power and method to calculate  panels in accordance to your load

Solar Power and method to calculate panels in accordance to your load

Q. How big the solar panel shall be? Answer: Starting point is to calculate power consumption of your house or devise.
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.

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