Hi,
1. There are three terminals in mobile li-ion battery. Two are +ve & -ve. What's the third one.
2. I want to make digital voltmeter using MCU.
How do they measure voltage by using float voltmeter. +ve lead I can connect to input of adc pin o MCU. How to make -ve lead of it. Will it ground of MCU. If yes, can I measure flaot voltages.
Usually specs in DMM are like 10M while measuring voltage. How this thing can be implemented in my ckt. Should I add separte 10M resistor, or internal imepdence of pin is high.
How resistance are measured in DMM. How does it vary with different ranges like 100, 10K,1M
1. There are three terminals in mobile li-ion battery. Two are +ve & -ve. What's the third one.
2. I want to make digital voltmeter using MCU.
How do they measure voltage by using float voltmeter. +ve lead I can connect to input of adc pin o MCU. How to make -ve lead of it. Will it ground of MCU. If yes, can I measure flaot voltages.
Usually specs in DMM are like 10M while measuring voltage. How this thing can be implemented in my ckt. Should I add separte 10M resistor, or internal imepdence of pin is high.
How resistance are measured in DMM. How does it vary with different ranges like 100, 10K,1M
