Bypass capacitor basics
A bypass capacitor (aka “filter cap”) is a small capacitor that dampens electrical noise moving toward an IC. Electrical noise can cause circuit malfunctions. Unless otherwise specified in the data sheet of an IC, a 0.1 µF non-polarized ceramic capacitor usually makes a good bypass capacitor.
Power Supplies 101
What are the components of a basic power supply subsystem?
- Source of power - battery, AC adapter, solar
- Input electronic noise filtering circuit
- Voltage regulator to provide a constant supply voltage
- Output electronic noise filtering circuit
What are the design considerations for a battery-operated circuit?
How many Amp-Hours of capacity are needed?
