Eval¶

Battery life¶

Unterschwelleneffekt / leakage current

Buzzer is now driven by MOSFET. The "Zero Gate Voltage Drain Current" is relevant for battery life in unused status.
Nexpedia
Most manufactures specify an "Zero Gate Voltage Drain Current" of 1µA at 20-30V. Temperature has an big impact.

Vergleichen mit verwendetem Transistor;
NPN (3.2.2019)
IE scheint 0, ICB ist mit 100nA angegeben

Einfach Messen... ist sowieso ein guter Geraete-Test

The MCU STM32L031x4 runs with 1.65V to 3.6V. Battery1 Battery2 specify a capacity of 235mAh to 2.0 volts
LEDs should be visible at 2Volts.