Abstract: If the operator attempts to stop the engine incorrectly it may destroy the alternator diodes and the battery. A protective circuit is disclosed which keeps the alternator field connected to the battery until a signal such as the engine-oil pressure reports that the engine has stopped. The protective circuit is small and connects to existing engine control panels; it may also test itself without any risk of damaging the alternator or the battery.

Abstract: If the operator attempts to stop the engine incorrectly it may destroy the alternator diodes and the battery. A protective circuit is disclosed which keeps the alternator field connected to the battery until a signal such as the engine-oil pressure reports that the engine has stopped. The protective circuit is small and connects to existing engine control panels; it may also test itself without any risk of damaging the alternator or the battery.

Abstract: The invention relates to a tube with a yarn catch place for winding yarn on textile machine equipped with at least one yarn catch place for catching yarn and starting the bobbin winding.The yarn catch place according to the invention is designed as an extended hole with a circumferentially inward extending catch point. The catch point is oriented in the direction of rotation of the tube and arranged such that an imaginary line connecting the two most distant circumferential points of the hole passes under the catch point. The catch place can be added to existing tubes and does not interfere with unwinding of yarn.