As of 2023, the American company Associated Power Technologies, Inc. (APT) is rebranded as EEC. EEC offers AC and AC/DC programmable power supplies with a very favourable price/performance ratio. The company's product portfolio includes both basic single-phase power supplies with output power starting at 400 VA, as well as powerful three-phase models, all controllable with the free Instrument Control Software or IVI/LabVIEW drivers.
All EEC power supplies provide a sinusoidal output signal with continuously variable output voltages up to 300 V (or 600 V in a "split phase" arrangement) with a frequency range of 40-1000 Hz.
