Fly Back Regulator

Recently have finish develop a simple +/-2V@7A fly back regulator with 60-80% conversion efficiency. Probably will upload some picture after the PCB is made.

This regulator is use on low resistive constant current load simulation to drive sense resistor. Where it is impossible to get the spec on the market due to it very limited usage, unless look for factory customize one.

There is however, the current loop is not stable. The ferrite was drive into saturation after few hours of operate, this will drop the overall efficiency or stop working at all, just wonder why?

Do anyone interested in this?

How many hours battery can be used after realt?

Many people ask me this question. Ok, here is the answer.

Just look at your power adapter! For example, your power adapter is: 19V 3.16A

-Power of Notebook~=70%*19*3.16= 42W

One cells using by ALTERNATIVE BATTERY is 8.4WHr(2300+mAH Tested) and your notebook using 8 cells.

-Power of Battery~=8.4*8=67.2WHr

Runtime of battery in your notebook:

-Runtime~=67.2/42=1.6 (around 1Hours 36 minutes)

But, notebook usually enter power minimizing mode when it standby. Considered you set power management to 50%. Your battery will last about 3Hours plus!

It all depend on how dynamic is the notebook adjust the power required base on user response. Dynamic processing! intel have Speedstep, AMD have PowerNow!

Realt

Now we would like to use the words realt to replace those words refill, refuel, repack, repair. Realt stand for the words real and alternative since we are the company who doing alternative battery.

Nowadays, notebook computer have rather short "on the market" cycle, finding original battery pack is rather difficult than buying a new notebook. Serious pricing competition in replacement battery industry in China result in some poor quality replacement battery be produced.

We dare not to say we are better than original but we are realt.