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

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.
Lithium Battery replacement

Lithium Battery replacement

How do I replace Li battery and make my device functional again?
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.
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!

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