Treatment Treatment of birthmarks Salmon patches, Mongolian blue spots and many moles never need treatment. They are either harmless or shrink and fade over time. However, port wine stains, strawberry marks and some moles may need treatment. This is usually if the birthmark causes problems or if it significantly affects your childâs appearance. The main treatments are listed below. Strawberry marks Most strawberry marks donât need treatment.
A thermistor is a type of resistor whose resistance is dependent on temperature, more so than in standard resistors.The word is a portmanteau of thermal and resistor.Thermistors are widely used as inrush current limiter, temperature sensors (NTC type typically), self-resetting overcurrent protectors, and self-regulating heating elements. thermistor is a type of resistor whose resistance is dependent on temperature, more so than in standard resistors.
PTC stands for âPositive Temperature Coefficientâ. PTC thermistors are resistors with a positive temperature coefficient, which means that the resistance increases with increasing temperature. PTC thermistors are divided into two groups, based on the materials used, their structure and the manufacturing process.The first group of PTC thermistors is comprised of silistors, which use silicon as the semiconductive material. They are used as PTC temperature sensors for their linear characteristic.The second group is the switching type PTC thermistor. This type of PTC thermistors is widely used in PTC heaters, sensors etc. Polymer PTC thermistors, made of a special plastic, are also in this second group, often used as resettable fuses.The switching type PTC thermistor has a highly nonlinear resistance-temperature curve.hey are used as PTC temperature sensors for their linear characteristic. The second group is the switching type PTC thermistor. This type of PTC thermistors is widely used in PTC heaters, sensors etc. Polymer PTC thermistors, made of a special plastic, are also in this second group, often used as resettable fuses.