# 72-7245 Tenma DC Power Supply Used

**Features:**

-   Dual Output Bench Power Supply
-   2 Independent isolated output
-   Four “3 digits” LED displays
-   0.01% Load and line regulation
-   Low ripple and noise
-   Tracking operation and auto series/parallel operation
-   Output on/off switch
-   Fan speed control circuit to minimize fan noise
-   Over load and reverse polarity protection

**Output Mode-Channel 1 & 2**

-   Voltage: 0 ~ 30V 
-   Current: 0 ~ 3A
-   Tracking Series Voltage: 0 ~ 60V
-   Tracking Parallel Current: 0 ~ 6A

**Constant Voltage Operation (CH1, CH2)**

-   Line Regulation: ≤ 0.01% + 3mV
-   Load Regulation: ≤ 0.01% + 3mV (rating current < 3A); ≤ 0.02% + 5mV (rating current > 3A)
-   Ripple & Noise: ≤ 1mVrms , 5Hz ~ 1MHz
-   Recovery Time: ≤ 100 S (50% Load change, Minimum load 0.5A)

**Constant Current Operation (CH1, CH2)**

-   Line Regulation: ≤ 0.2% + 3mA
-   Load Regulation: ≤ 0.2% + 3mA
-   Ripple & Noise: ≤ 3mArms

**Tracking Operation (CH1, CH2)**

-   Tracking Error: ≤ 0.5% + 10mV of CH1
-   Series Regulation: ≤ 0.01% + 5mV
-   Load Regulation: ≤ 300mV
-   Ripple & Noise: ≤ 2mVrms , 5Hz ~ 1MHz

**Meter**

-   Digital: 3 digits 0.5” LED display
-   Accuracy ±(0.5% of rdg + 2 digits)

**Insulation**

-   Chassis and Terminal: ≥ DC 500V / 20MΩ
-   Chassis and AC Cord: ≥ DC 500V / 30MΩ

**Power Source**

-   AC 100V/120V/220V +10%, 230V(+10% ~ -6%), 50/60Hz

The Tenma 72-7245 is a 2-channel, 180W output, linear DC power supply. Overload and reverse polarity protection and an output on/off switch keep the product and its load safe from unexpected conditions. A High regulation (0.01%+3mV) and low ripple/noise (< 1mVrms, 5Hz~1MHz)are maintained for channel 1 and 2 in constant voltage mode. Automated cooling fan speed control minimizes fan noise according to load conditions, ensuring quiet operation. The product is an ideal solution for lightweight, inexpensive bench-top or portable applications requiring high regulation and multiple outputs.

## Details

- **Price:** 425.0 USD - 635.0 USD
- **Vendor:** Tenma
- **Type:** Dc Supply
- **Tags:** DC Power Supply, Manufacturers, Power Supplies & Loads, product_manual_group_2, Product_used, Tenma

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| None | 425.00 USD | In stock |
| NIST Traceable | 530.00 USD | In stock |
| NIST Traceable with Full Data | 565.00 USD | In stock |
| ISO IEC 17025 Accredited | 635.00 USD | In stock |

## Images

- 72-7245 Tenma DC Power Supply

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> Source: [ValueTronics](https://valuetronics.com/products/72-7245-tenma-dc-power-supply-used)
> Updated: 2026-05-21