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 run-time calculator for Li batteries

Battery run-time calculator for Li batteries

This is a simplified run-time calculator to estimate the run-time of your loads for Li batteries. You need to know: a. Battery capacity in mAh (mili Amp hours) b. Load currents in mA.Please note 1Ah=1000mAh and 1A=1000mA. So if you have large car battery with 20Ah capacity, then put 20000&n
Current and capacitors, calculator

Current and capacitors, calculator

 This calculator helps to compute current limiting capacitor for low frequency (below 60Hz) AC sources of voltage.
Solar Power and method to calculate  panels

Solar Power and method to calculate panels

Q. How big the solar panel shall be? Answer: Starting point is to calculate power consumption of your house or devise.
Batteries-overvew (Part 0)

Batteries-overvew (Part 0)

There are many other battery chemistry, each with their own advantages and disadvantages. Also batteries classified under their shapes. In the last few years a few geometrical shapes became very popular.

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