Adjustable DC power supply
DF1720 / DF1730 adjustable laboratory DC power supplies
Adjustable laboratory DC power supplies with continuously variable output voltage and current, low ripple and a settable current limit, in single-output and dual-output versions.
27Catalogue models
1989Goldsource founded
8Exterior 3D models
Reconstructed exterior
Every side,
square on.
Illustrative renders reconstructed from catalogue photographs; dimensions are estimated. Appearance and configuration may vary by version.
Interactive exterior
DF1720SB 5A,
in the round.
Illustrative exterior model reconstructed from catalogue photographs. Appearance and configuration may vary by version.
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Illustrative exterior model. Appearance and configuration may vary by version; check against the current product specification.
Historical catalogue record
What the catalogue says.
What to confirm.
- Product category
- Adjustable DC power supply
- Series
- DF1720 / DF1730
- Catalogue models
- 27
- Source
- Company website archive (2014)
- Source
- DIYTrade listing (2025)
- Current specifications & availability
- Confirm by enquiry
Features as printed in the catalogue
- Input voltage: AC 220–240V or AC 110–120V
- Continuously adjustable output voltage and output current
- Low ripple voltage
- Single-output or dual-output
- Current-limiting protection with a freely settable limit point
- Suffix SB / SC / SL / SD: display and output variants; DF1732T, DF1736 and DF1741SL listed on DIYTrade
Catalogue values are historical reference information, not confirmed current specifications. Confirm the exact model, ratings, input range and certification status before ordering.
DF1720 / DF1730 catalogue models.
| Model | Output | Output current | Ripple voltage | External package size | Weight |
|---|---|---|---|---|---|
| DF1720SB 5A | 0–20V | 0–5A | <1mV | 29.0 × 15.8 × 13.5 cm | 3–6 kg |
| DF1720SC 5A | 0–20V | 0–5A | <1mV | 29.0 × 15.8 × 13.5 cm | 3–6 kg |
| DF1730SB 2A | 0–30V | 0–2A | <1mV | 29.0 × 15.8 × 13.5 cm | 3–6 kg |
| DF1730SC 2A | 0–30V | 0–2A | <1mV | 29.0 × 15.8 × 13.5 cm | 3–6 kg |
| DF1730SB 3A | 0–30V | 0–3A | <1mV | 29.0 × 15.8 × 13.5 cm | 3–6 kg |
| DF1730SC 3A | 0–30V | 0–3A | <1mV | 29.0 × 15.8 × 13.5 cm | 3–6 kg |
| DF1730SB 5A | 0–30V | 0–5A | <1mV | 29.0 × 15.8 × 13.5 cm | 3–6 kg |
| DF1730SC 5A | 0–30V | 0–5A | <1mV | 29.0 × 15.8 × 13.5 cm | 3–6 kg |
| DF1720SL 10A | 0–20V | 0–10A | <3mV | 37.0 × 26.2 × 16.3 cm | 8–12 kg |
| DF1720SC 10A | 0–20V | 0–10A | <3mV | 37.0 × 26.2 × 16.3 cm | 8–12 kg |
| DF1720SL 20A | 0–20V | 0–20A | <3mV | 37.0 × 26.2 × 16.3 cm | 8–12 kg |
| DF1720SC 20A | 0–20V | 0–20A | <3mV | 37.0 × 26.2 × 16.3 cm | 8–12 kg |
| DF1730SL 10A | 0–30V | 0–10A | <3mV | 37.0 × 26.2 × 16.3 cm | 8–12 kg |
| DF1730SC 10A | 0–30V | 0–10A | <3mV | 37.0 × 26.2 × 16.3 cm | 8–12 kg |
| DF1730SL 20A | 0–30V | 0–20A | <3mV | 37.0 × 26.2 × 16.3 cm | 8–12 kg |
| DF1730SC 20A | 0–30V | 0–20A | <3mV | 37.0 × 26.2 × 16.3 cm | 8–12 kg |
| DF1721SL 5A | 0–20V | 0–5A | <5mV | 37.0 × 26.2 × 16.3 cm | 6–10 kg |
| DF1721SD 5A | 0–20V | 0–5A | <5mV | 37.0 × 26.2 × 16.3 cm | 6–10 kg |
| DF1731SL 2A | 0–20V | 0–2A | <5mV | 37.0 × 26.2 × 16.3 cm | 6–10 kg |
| DF1731SD 2A | 0–20V | 0–2A | <5mV | 37.0 × 26.2 × 16.3 cm | 6–10 kg |
| DF1731SL 3A | 0–30V | 0–3A | <5mV | 37.0 × 26.2 × 16.3 cm | 6–10 kg |
| DF1731SD 3A | 0–30V | 0–3A | <5mV | 37.0 × 26.2 × 16.3 cm | 6–10 kg |
| DF1731SL 5A | 0–30V | 0–5A | <5mV | 37.0 × 26.2 × 16.3 cm | 6–10 kg |
| DF1731SD 5A | 0–30V | 0–5A | <5mV | 37.0 × 26.2 × 16.3 cm | 6–10 kg |
| DF1741SL 3A | — | — | — | — | — |
| DF1732T | — | — | — | — | — |
| DF1736 | — | — | — | — | — |
Sizes are external package sizes in cm; weights in kg; quantities are pieces per carton.
