1.BC1 ceramic tray variable series are wound with chromium-alloy wire as a resistor element.
2.The entire component is coated non-flammable and high-temperatue resin exception for the slide contact surface.
3.After cooling and drying, insulation is applied through a high-temperature process. Installed centered roating adjuster component slides along the resistance element to vary the resistance to the desired value.
4.Can provide the knob with customers requirement.