-
principleR1 is a fuse, and the power supply is integrated into DC through D1 and C1.Dc through R2 to make Q1 slightly on...
-
Find the official after-sales phone, contact after-sales personnel to deal with....
-
You have this problem, I believe many people have encountered. If it is plugged into the socket to charge, there will ge...
-
1. Check the charging interface, it may be grey!Because we are used to putting the mobile phone in the pocket, the charg...
-
The situation that the mobile phone can not be charged may be more or less experienced, every time the mobile phone can...
-
About 8 hours1? During the use of the microphone, when the voltage is too low, the sound emitted by the microphone will...
-
The number of times the battery can be inserted in the dial interface * # * #62880# * # * * can be...
-
Inside the tram charger. R2" It represents a resistor. A resistor is an electronic component that is used to limit c...
-
Charging time: T1=0.7 (R1 R2 C; Discharge time: T2=0.7*R2*C; Oscillation period: T=T1 T2; Oscillation frequency: f=1\/T...
-
The principle of the measuring pen (for your reference :1. Ohm's law: I=U\/R;2, the total resistance relationship of th...
