Ametek / Elgar / California Instruments 751TC AC Power Source

The Ametek/Elgar/California Instruments 751TC is a 750 VA single-phase AC power source engineered for precise simulation of AC power conditions across research, development, manufacturing, and test environments. It delivers programmable voltage and frequency with low distortion and tight load regulation, making it suitable for component characterization, equipment validation, and power quality studies requiring accurate waveform generation.

Technical Specifications

• Output Power: 750 VA / 750 W at 110–130 V RMS from unity to ±0.7 power factor


• Output Voltage: 0–130 V RMS or 0–260 V RMS (rear panel selectable); 0–270 VAC; 0–350.0 V L-N; 0–700 V L-L


• Frequency Range: 45 Hz to 5 kHz at full power; 20 Hz to 20 kHz extended; DC to 40–5 kHz capability


• Frequency Accuracy: 0.01 Hz


• Frequency Response: ±0.5 dB from 45 Hz to 5 kHz


• Total Harmonic Distortion: <0.30% (200–600 Hz); <0.5% (45–5 kHz); 0.25% at 100 Hz


• Load Regulation: ±1% over 45 Hz to 5 kHz at unity power factor; ±0.025% of full range with 0.1% control resolution


• Voltage Programming Resolution: 0.1%


• Stability: ±0.1%


• Accuracy: 0.1% of range


• AC Noise: 80 dB below full output (input shorted); 60 dB below full output at rated power


• AC Input: 115 VAC 25 A CB or 208 VAC 15 A CB; 187–264 V RMS; 48–65 Hz; 2100 W maximum; <8.5 A RMS @ 115 V, <4.4 A RMS @ 230 V; 0.97 power factor typical


• Efficiency: 70%


• Protection: Automatic overload and short-circuit protection with auto-reset


• Dimensions: 7 in H × 19 in W × 21 in D


• Shipping Weight: 100 lbs

Key Features

• GPIB (IEEE 488.2-1987), RS232, USB (460800 baud), and LAN (LXI) interfaces for full programmability


• Selectable output voltage ranges via rear panel configuration


• Extended frequency capability from DC through 20 kHz


• Sub-0.5% THD performance across audio and power frequency bands


• Load regulation compensation for line voltage, frequency, and load variation

Typical Applications

• Power supply design and validation testing


• Equipment EMC and power quality assessment


• Component stress and reliability evaluation under programmed AC conditions


• Frequency response and transient analysis

Compatibility & Integration Full remote control and automated test sequences via GPIB, USB, RS232, or LXI. Optional GPIB on select configurations.