Testing a battery-powered product with a 26K resistor between the battery pads (no battery is soldered at this time!),...

QWE4562009

Testing a battery-powered product with a 26K resistor between the battery pads (no battery is soldered at this time!),... [Copy link]

Testing a battery-powered product, there is a 26K resistor between the two ends of the battery pad (no battery is soldered at this time!), what is the internal resistance of the board power supply circuit? Is this the resistance of the main control VCC to GND? I see that the parallel connection is the power supply end of the main control! What is the reasonable range of this resistance?

迈尔风随

The resistance value tested under power-off condition is affected by many factors and does not represent the actual power-on condition.

QWE4562009

Posted by Mayer Fengsui on 2020-12-9 21:58 The resistance value tested under power-off condition is affected by many factors and does not represent the actual power-on condition

Do you mean to measure the resistance?

迈尔风随

QWE4562009 posted on 2020-12-10 10:44 Do you mean to use a resistor to measure the power?

First of all, you need to figure out what data you want to measure. You cannot use a multimeter to measure resistance when the power is on. After the power is on, the equivalent resistance of the circuit changes dynamically. Even if you can measure it, it is not very meaningful. Think about it first.