Hi everyone,
I have to power my Lenovo Yoga laptop via 12V DC source. The needed input voltage for laptop is 20V. I use step up to increase voltage to 20V. The needed current is 2.25A, but the current measured at source is less than 0.1A. The problem is not at source, it can give more ampers when I attach other devices. The conclusion is that laptop (or something before it reaches laptop) does not take the current.
DC Source 12V -> Step up to 20V -> laptop
Final voltage is ok, only the problem is in the current.
Thanks!
I have to power my Lenovo Yoga laptop via 12V DC source. The needed input voltage for laptop is 20V. I use step up to increase voltage to 20V. The needed current is 2.25A, but the current measured at source is less than 0.1A. The problem is not at source, it can give more ampers when I attach other devices. The conclusion is that laptop (or something before it reaches laptop) does not take the current.
DC Source 12V -> Step up to 20V -> laptop
Final voltage is ok, only the problem is in the current.
Thanks!