Categories Electrics Electronics Sound Effect Tools Inverter drive power up Post author By redsoul Post date May 19, 2020 Variable Speed Drive or variable-frequency drive. Old tech controlling the speed or torque of electric motors. This one is powering up with a pitched screech. Download File type: audio/wav File size: 55 KB Length: 0:030 minutes, 3 seconds Bitrate: 176kb/s CBR ShareClick to share on WhatsApp (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Telegram (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window) Tags drive, electric, electromechanical, electronic, hydraulic, inverter, motor, power, screech, speed, torque, variable ← Rotary phone dial → Inverter drive powering down