Brightsparks4kids variable resistor module
Brightsparks4kids variable resistor module brightsparks4kids st007 the variable resistor unit can be used with the brightsparks4kids beginners electricity kit either as a speed control for the motor module dimmer switch for the bulbs or volume control for buzzer module a variable resistor varies electric current and is commonly used in a household lighting dimmer switch but has a number of other applications brightsparks4kids variable resistor module