The thermo-electric element is the key component of thermo-electric actuator, it can precisely control the actuator open / close by the PTC heating the bottom of element, as a result expanding the thermal material in element and push piston.
Wisdom made an experiment of temperature – stroke comparison beteen regular wax made element and wisdom product.
In above picture, left ones are wisdom element, while right ones are regular wax element.
Test condition: start from 30°C till 90°C, with load of 80N.
The stroke – temperature curve as below:
1. Wax element start actually generating motion at 40°C; note that the piston beneath the element top.
2. Wisdom element start motion at 79°C, and grow stroke quite fast: between 79°C to 84°C, the element piston grows 5mm; while wax element grows 5.2mm between 69°C to 79°C. Wisdom element significantly faster than wax element as temperature incresses.