# 121B Elgar AC Source Used

**Additional Features:**

-   Output Power: 120VA
-   Frequency Range: 45 Hz-5 kHz
-   Output Voltage Range: 0-130, 0-260
-   Line Regulation: ±0.25% at ±0.7 power factor
-   Continuous duty at 100% of rated capacity

Elgar 121B power sources are wide range, solid-state linear amplifiers that convert the incoming line to low distortion, stable sine wave power.

These solid-state frequency changers are benchtop/19" rackmount units that can be driven over their full voltage and frequency ranges by fixed, variable or programmable plug-in oscillators. The 121B offers overload and overtemperature protection, can operate continuously at up to 150% rated capacity.

The linear design of the B Series provides a highly regulated, clean sine wave, making these units ideal for linear loads in general purpose test applications as well as for Automatic Test Equipment systems and avionics testing.

## Details

- **Price:** 0.0 USD - 172.5 USD
- **Vendor:** Elgar
- **Type:** AC Sources
- **Tags:** AC Source, Elgar, Manufacturers, Power Supplies & Loads, product_manual_group_1, Product_used

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| None | 0.00 USD | In stock |
| NIST Traceable | 127.50 USD | In stock |
| NIST Traceable with Full Data | 150.00 USD | In stock |
| ISO IEC 17025 Accredited | 172.50 USD | In stock |

## Images

- 121B Elgar AC Source

---

> Source: [ValueTronics](https://valuetronics.com/products/121b-elgar-ac-source-used)
> Updated: 2026-05-21