Electronics of any kind are driven by electrical power, and this section is all about handling electrical power.
Voltage and Current
All starts with voltage and current - and the many ways to measure and monitor both.
This is the foundation on which tools like multimeters, oscilloscopes but also devices like voltage regulators, chargers and battery protection systems (BMS) operate.
Constant Voltage (CV) / Constant Current (CC)
At minimum, you need to supply a stable voltage to your devices. Neither a simple AC power supply nor a battery alone are sufficient because their output voltage fluctuates and may not even be at all in the voltage range your device requires.
You frequently need a constant voltage regulator that accepts a wide range of input voltage and provides a fixed and stable robust output voltage.
Batteries
Rechargeable batteries are a great power source. For safe operations, both charging and discharging needs careful monitoring and protection.
That’s what a BMS (Battery Management System) does: it carefully monitors both voltage and current to make sure you are not over-charging or drawing too much energy from your battery.
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(content created Feb 10, 2024 - last updated Feb 27, 2024)