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

How efficient solar panels and can they power your electronic?

How efficient solar panels and can they power your electronic?

This material is giving examples of real solar powered devises and discussing how bad it is in reality!
Charging SLA (Lead Acid battery) -basics

Charging SLA (Lead Acid battery) -basics

The lead acid chemistry is fairly tolerant of overcharging, which allows marketing organizations to get to extremely cheap chargers, even sealed lead acid batteries can recycle the gasses produced to prevent damage to the battery as long as the charge rate is slow. We offer a range of chargers from inexpensive to very sophisticated, depending on the requirements of the customer, but all of the chargers we sell off-the-shelf are highly regulated sophisticated chargers that cannot
Calculator for battery run time for Lead Acids batteries

Calculator for battery run time for Lead Acids batteries

This is a simplified battery capacity calculator for Lead acid batteries is using the Peukert's law.
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.

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