Wednesday, November 21, 2018

AAA Battery Protection with Wrong Polarity LED Indicator

This simple circuit will protect the AA or AAA battery from the wrong polarity connection to your device. If the battery is connected in the opposite way, D1 will conduct and PTC Fuse will break the circuit. Wrong polarity indicator, LED 1 will be turned on at the same time.
at

Designing Thermal Vias

Enhancing thermal transfer for FR-4 PCBs can be achieved cost-effectively by incorporating thermal vias and plated through-holes (PTH) betwe...