My notebook is the Dell Inspiron 1427, with 19V power adapter, the output ripple, making the sound card audio output with "slightest" noise, then the amplifier is very obvious, seriously affecting the effect. There is a 12V 60AH car lead-acid battery, but the laptop power adapter is 19V. Do not install the battery (because 12V to the battery charge is certainly not high enough) in the case, to ...
84905212, I'd think no matter how good the AC power supply is no DC power pure ...
Mgljk, laptop battery is not a communication circuit? It seems not directly replace the battery with a battery instead. Is it open the battery to replace the battery battery? I do not want to destroy the battery ... ... and looks like a laptop battery is 11.1V it ... ... battery 12V, I see more hanging ... ... voltage is not how low, it would be a high problem. In addition, the music when the laptop battery life can only be about 1.5h, not enough (to do live sound reinforcement)
Said the situation is like a laptop power ripple caused by the proposed purchase of a good quality power supply. But with 12V supply notebook DC-IN input port, certainly because the voltage is too low and does not work. At the same time with 12V battery power through the board input to the notebook power supply is not feasible, because the books will automatically detect the parameters of the board access side.
With the car power can solve this problem friends, 12-24V change 100-240V enough for you
Very simple friends: 1, you now use the adapter is not good quality! Re-change one, change the time to listen to there is no noise, as long as you can insert into the line, 16 ~ 22V are not related, there are regulators. 2, if the brand for a few brands do not work, then that is the quality of the notebook is not good, then, want to listen to music when the adapter pulled, with the laptop battery can at least listen to two or three hours, If the time is short, then put your car battery connected to: remove the built-in battery, the battery is positive and negative lead on the two lines out of the car battery and then put the battery back on the OK friends. Of course, hands-on ability to put the battery to the repair department to ask people to do it.
Sound card issued a slight sound is not necessarily the adapter, you can not install the adapter, look at the power supply when the board is also a slight sound.
The second replenishment answer --- If you want to DIY a 12V to 19V adapter, then one or two words can be said clearly, you can add QQ84905212, I detailed answer,
If the switch power supply is no problem, then that is, your laptop filter circuit failure, look at your tone is not intended to repair, and that you can start in the adapter, buy power slightly larger adapter, and then use LC filter circuit can be resolved.
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The third replenishment answer --- your notebook board should be 6-cell battery (2 and 3 strings), there are three panels inside the battery protection board and battery monitoring circuit, absolutely can not directly connected to the battery, Moreover, 12V 60AH car lead-acid battery current is relatively large, and no way to connect the protection circuit, it is easy to burn books, can only plan to accept the external adapter adapter that port (original 19V, then 12V can still work, Notebook board charge may be a bit slow or can not charge,), but must be added to the current limiting circuit.
Look at your idea is to put your 12V battery installed in the notebook, but also worried that can not start the sound card, while not want to destroy the original battery.
I suggest you go directly to the Dell store to be equipped with a battery can be.
