Conventional AC fan technology has been used extensively in industry for equipment cooling and air circulation. Its main advantages are low costs and simple designs but disadvantages include high running temperatures, limited airflow/pressure, low efficiency, and heavy weight construction.

PTI's new AC/DC fan technology employs innovative DC fan design to increase product performance and efficiency:

Low running temperature rise - A low running temperature results in much longer bearing life. The life of the AC/DC fan is at least 3 times greater compared to the standard AC fan with the same airflow/pressure.

Zero temperature rise under locked rotor condition - The AC/DC fan motor is electronically protected.

Light-weight rugged construction - The AC/DC fan material is made of glass filled PBT rather than aluminum construction due to low motor temperature requirements.

High efficiency - The AC/DC fan can typically deliver the same airflow/pressure as the conventional AC fan but with only 25% of the power. This feature alone ensures greater efficiency. The speed is independent of the AC source frequency being 50Hz or 60Hz and can operate at 400 Hz.

High airflow/pressure - The maximum pressure x air volume that the AC/DC fan can deliver is typically double that of the standard AC fan.

Double insulation - AC/DC fans are double insulated, thus requiring no grounding.

Small hub area – AC/DC fans require less silicon steel and copper weight.

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