Current Limiter Symbol. The optional component r2 protects q2 in the event of a short circuited load. 343 1 1 gold badge 7 7 silver badges 13 13 bronze badges.
Motor stalling relay stalling in motor is a condition when the winding are energized but the rotor does not rotate. In view of the possible damage to a power supply in cases of overload current limiters are almost always fitted and they are a standard feature incorporated into regulated power supply ics. Sarah szabo sarah szabo.
It consists of an n channel jfet with the gate shorted to the source which functions like a two terminal current limiter or current source analogous to a voltage limiting zener diode.
When the current through r sense exceeds the design limit q2 begins to turn on which in turn begins to turn off q1 thus limiting the load current. As the word implies the main purpose of this gadget is to limit current to a circuit. Suffice here to say is that current in a series circuit is same at all point but voltage is dropped across each components. A constant current diode is an electronic device that limits current to a maximal specified value for the device.
