1. Is the current of the power adapter good? The unit of battery capacity is mAh (milliampere-hour), and the unit of current is A (ampere) or mA (milliampere). The two are not the same physical quantity, and the battery capacity and charging current are not the same. necessarily contact.2. Is the current of the power adapter large? The current value marked on the mobile phone charger (actually cal···
【查看详情】
The increasingly developed portable electronic products have higher and higher requirements on the performance of rechargeable batteries such as capacity and cycle life. There are four types of commonly used batteries, nickel-cadmium batteries and lead-acid maintenance-free batteries (SLA for short) in the last century. It has been widely promoted in the 1960s, and the two categories of nickel-met···
【查看详情】
1. The load of the switching power supply is short-circuited (especially the DC/DC converter is short-circuited or has poor performance, etc.), at this time, first disconnect all the loads of the switching power supply circuit, and check whether the switching power supply circuit is faulty or the load circuit is faulty. If the load circuit is disconnected and the voltage output is normal, it means···
【查看详情】
