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A trolling motor is a self-contained marine propulsion unit that includes an electric motor, propeller and control system, and is affixed to an angler's boat, either at the bow or stern. A gasoline-powered outboard used in trolling , if it is not the vessel's primary source of propulsion, may also be referred to as a trolling motor.
Lorentz force acting on fast-moving charged particles in a bubble chamber.Positive and negative charge trajectories curve in opposite directions. In physics, specifically in electromagnetism, the Lorentz force law is the combination of electric and magnetic force on a point charge due to electromagnetic fields.
For certain types of electric motors or generators to function, the coils of the rotor must be connected to complete an electrical circuit. Originally this was accomplished by affixing a copper or brass commutator or 'slip ring' to the shaft, with springs pressing braided copper wire 'brushes' onto the slip rings or commutator which conduct the current.
Precise position control impossible except at full stops Wax motor: Smooth operation. Not as reliable as other methods. Segmented spindle: Very compact. Range of motion greater than length of actuator. Both linear and rotary motion. Moving coil: Force, position and speed are controllable and repeatable. Capable of high speeds and precise ...
There are arrowhead paravanes, flexi-wing paravanes, and bi-wing paravanes; these water kites are used in tuna fishing operations. [3] Trolling-for-fish devices that are paravanes or water kites do not always use the descriptor; George Dahl in 1957 taught how to kite his device underwater in order to place bait at the desired depth; and he wanted to have a boat have several of the devices ...
A linear motor powers the needle, enabling fast retraction acceleration and varying insertion speeds. A 50-μm tungsten wire that has been bent at the tip and is driven both axially and rotationally makes up the pincher. An imaging stack is also included in the inserter head for needle guidance, real-time insertion viewing, and verification.
When the machine or motor is used as a motor, this EMF opposes the armature current, and the armature converts electrical power to mechanical power in the form of torque, and transfers it via the shaft. When the machine is used as a generator, the armature EMF drives the armature current, and the shaft's movement is converted to electrical power.
The motor has a stator and a rotor but there is no electrical connection between the two and the rotor current is generated by induction.The rotor winding is connected to a commutator which is in contact with a short-circuited pair of brushes which can be moved to change their angular position relative to an imaginary line drawn through the axis of the stator.