watch, car, or RV, batteries are a part of our lives. Most of the time, we don’t need to think about the voltage of a battery. However, when working with DC power systems for RV’s boats or off-grid applications, a serious decision needs to be made between 12V vs 24V. ...
如果AB、AC脚脚间阻抗都很大 , 而改用黑表笔接A脚后 , AB、AC脚脚间阻抗都较小 , 说明此三极管為NPN型三极管 ; 如 Fruit with black pen then A feet, AB feet between the impedance is small, The impedance between AC pin and foot is larger, indicating that this triode is PNP type triode. ...