DC switching power supply
DF1790 13.8V switching power supplies
High-frequency switching power supplies that convert the mains into 13.8V DC with overload and short-circuit protection, designed for transceivers, mobile equipment and portable units.
4Catalogue models
1989Goldsource founded
2Exterior 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
DF1790-1303,
in the round.
Illustrative exterior model reconstructed from catalogue photographs. Appearance and configuration may vary by version.
Drag to rotate · Scroll to zoom
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
- DC switching power supply
- Series
- DF1790
- Catalogue models
- 4
- Source
- Company website archive (2014)
- Source
- DIYTrade listing (2025)
- Current specifications & availability
- Confirm by enquiry
Features as printed in the catalogue
- Input voltage: AC 110V ±15% or 220V ±15%
- Output voltage: 13.8V ±3%
- 0.5% power adjustment rate
- Overload and short-circuit protective circuit
- High-frequency switching: small dimensions, high efficiency, low ripple
Catalogue values are historical reference information, not confirmed current specifications. Confirm the exact model, ratings, input range and certification status before ordering.
DF1790 catalogue models.
| Model | Output current | Surge current | Load regulation | Ripple voltage | External package size | Net / gross weight | Pieces per carton |
|---|---|---|---|---|---|---|---|
| DF1790-1303 | 3A | 5A | 0.5% | 100mV | 33.0 × 29.5 × 28.0 cm | 15 / 17 kg | 16 |
| DF1790-1306 | 6A | 8A | — | — | 43.0 × 39.5 × 22.0 cm | 12 / 14 kg | 8 |
| DF1790-1310 | 10A | 12A | 0.5% | 150mV | 48.5 × 45.0 × 20.0 cm | 16 / 18 kg | 8 |
| DF1790-1320 | 20A | 22A | 1.0% | 200mV | 57.35 × 53.5 × 24.0 cm | 20 / 22 kg | 8 |
Sizes are external package sizes in cm; weights in kg; quantities are pieces per carton.
