The Positive Temperature Coefficient (PTC) thermistor causes the compressor “run” capacitor to be bypassed for a brief period of time at start up, creating extra starting torque in the compressor motor.
[pdf] A soft start kit for home air conditioner units gradually ramps up the voltage, allowing the compressor to start more gently. By reducing the startup amperage, soft starts work to minimize the impact on your home’s electrical system.
[pdf] Atlas Copco, Stockholm, Sweden, unveiled its latest generation of clean compressors at bauma 2019 — new sustainable mobile air equipment powered by lithium-ion batteries and energy-efficient electric motors.
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