# PS503A Tektronix DC Power Supply Used

**Additional Features:**

-   Dual tracking voltage control: 0-20V and 0/-20V at 1A; Fixed output at 5V/1A
-   Power: 45W
-   Remote resistance programming
-   Requires TM 500 Series Power Module (sold separately)

The Tektronix PS503A is a dual 0-20V DC constant-voltage, current-limited, floating power supply. It is designed to operate in the high-power compartment of the TM 504 or TM 506 Power Module. In the high-power compartment, it provides a floating dual 0-20V DC at 1A. Operatinfg in a standard compartment of a TM 500 Series Power Module, the PS503A supplies a floating dual 0-20V DC at 400mA.

## Details

- **Price:** 0.0 USD - 153.0 USD
- **Vendor:** Tektronix
- **Type:** Dc Supply
- **Tags:** DC Power Supply, Manufacturers, Power Supplies & Loads, product_manual_group_1, Product_used, Tektronix

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| None | 0.00 USD | In stock |
| NIST Traceable | 93.50 USD | In stock |
| NIST Traceable with Full Data | 110.50 USD | In stock |
| ISO IEC 17025 Accredited | 153.00 USD | In stock |

## Images

- PS503A Tektronix DC Power Supply

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> Source: [ValueTronics](https://valuetronics.com/products/ps503a-tektronix-dc-power-supply-used)
> Updated: 2026-05-21