Elgar 121B AC Power Source

The Elgar 121B is a precision AC power source designed for simulating and testing various AC power conditions. As a solid-state linear amplifier, it converts incoming line power into a low-distortion, stable sine wave output. This unit is suitable for general-purpose testing, Automatic Test Equipment (ATE) systems, and avionics testing due to its regulated and clean sine wave output. The Elgar 121B is a benchtop or 19-inch rackmount unit that can be controlled by external oscillators, providing flexibility in its operation. It includes overload and overtemperature protection to ensure reliable operation.

### Technical Specifications

* **Manufacturer:** Elgar (also listed as Xantrex Elgar)
* **Model:** 121B
* **Output Power:** 120 VA
* **Output Voltage Ranges:**
* 0-125 VAC (adjustable)
* 0-250 VAC (adjustable)
* 0-130 VAC
* 0-32 V (continuously adjustable)
* 0-65/130/260 VAC (selectable via rear panel jumper)
* **Frequency Range:** 45 Hz to 5 kHz
* Can be used for testing to military specification operating requirements over the frequency range of 47 to 63 Hz or 47 to 425 Hz
* Optionally expandable to 10 kHz
* **Frequency Accuracy:** Up to .0001% with a suitable plug-in oscillator
* **Harmonic Distortion:** Typically below 0.3% midband, 0.6% over the full frequency range
* **Line Regulation:** ±0.25% at rated load for a +10% input change at full scale output voltage
* **Load Regulation:** ±1%, no load to full load over the full frequency range. Better than ±0.25% for fixed frequency output
* **Input Voltage:**
* Can be wired for 115 VAC, 50-60 Hz
* Can be wired for 230 VAC, 50-60 Hz
* 115/208/230 VAC, +10% (208 VAC not available on all models)
* **Phase:** Single-phase (can be configured for 2-phase or 3-phase by stacking units with a multi-phase oscillator)
* **Protection:** Overload and overtemperature protection
* **Duty Cycle:**
* B Series: Continuous duty at 100% of rated capacity
* Can operate continuously at up to 150% rated capacity
* **Control:**
* Front panel voltage amplitude control and voltmeter for output monitoring
* Programmable via IEEE-448 GPIB when used with a Plug-In Programmer (PIP)

### Interfaces

* **Output Terminals:** Rear panel terminal block and front panel binding posts
* **Oscillator Input:** Accepts fixed, variable, or programmable plug-in oscillators to set output frequency
* **GPIB:** IEEE-448 (optional, with Plug-In Programmer)

### Physical

* **Form Factor:** Benchtop / 19-inch rackmount enclosure
* **Cooling:** Air is drawn through a front-panel grill and exhausted at the rear
* **Weight:** 43.00 lbs

### Compatibility

* **Multi-phase Operation:** Can be used in multi-phase configurations (2-phase or 3-phase) by stacking two or three Model 121B units, all driven by the same multi-phase plug-in oscillator
* **Oscillators:** Accepts a variety of plug-in oscillators for frequency control

Why Choose Aumictech for ELGAR 121B?
At Aumictech, we specialize in supplying high-end AC power source equipment. Whether you need precise voltage and frequency simulation for product development, robust testing capabilities for ATE systems, or reliable power for avionics applications, our team ensures the ELGAR 121B delivers maximum performance for your application.