Pulsed Current Source for SMA (CB1249E)

    In the figure we have a constant current source for Shape Memory Alloy or (Nitinol). The potentiometer adjusts the average current by the pulse width applied to the SMA. The transistor must be equipped with a heat radiator. The circuit is from the book Mechatronics Sourcebook by Newton C. Braga, published in the United States. More current transistors such as TIP42 can also be used.






Circuit Bench