How Should You Form-Charge a New NiMH Receiver Pack?

How Should You Form-Charge a New NiMH Receiver Pack?

Short Answer: Use NiMH Mode and Pack-Specific Settings Charge a five-cell NiMH receiver pack with the charger’s NiMH program and the current, cell count or nominal voltage, termination, and safety limits specified for the exact battery and charger. Do not use...

DC Motors and Generators – Learn Something

An old film to bring you up on the basics. Weirdly, physics don’t change. A DC motor and a DC generator are the same machine run in opposite directions, and the film above builds both from a single loop of wire. It is worth a watch. Once you see the wire move,...
How Do Piezo Gyros Work in RC Models?

How Do Piezo Gyros Work in RC Models?

Short Answer: A Piezo Gyro Senses Rotation and Commands a Correction A piezo gyro detects angular motion of the model, turns that motion into an electrical signal, and sends a correction to a servo or flight controller. The correction helps resist an unwanted yaw,...

Balancing Severely Out of Balance A123 Pack

The following is a recent exchange discussing some charging logic that is impacted often by time-out settings in chargers. Not a bad thing all in all. The same logic can be applied to Lipo packs as well. Hi, Dave: Here’s my situation: All of my A123 batteries...

Is Daily Low Self Discharge Rate and Important Factor in RC?

A customer asking about an unusual cell size of ours asks: “Are they are low self discharge?” They are not Eneloops which would be the only NiMH I would classify as Low self discharge. This is almost a silly thing to consider because we come off the...