Various Power Supplies
PSU-1228 / PSU-1250

Small, switched power supplies with up to 28/50A.

These power supplies offer in a small case everything the radio amateur needs. The power supplies are either switched to fixed 13.8V, or to a variable output voltage between 9 and 15V. The maximum current may be up to 28A (PSU-1228, 20A continous) or 50A (PSU-1250, 40A continous). This is sufficient for all 100W transceivers. The built-in fan is temperature controlled. With little load the fan does not run at all, the PSU-12xx is absolutely quiet. Only with a longer and higher load the fan starts to run to cool the internal electronics. In cases where interferences occur, the PSU-12xx offers a control which shifts the frequency of the birdies, if required. The back-lit instrument shows (selectable) either Voltage or Current. All controls are conveniently located on the front, the 230VAC and DC connectors are on the rear. The PSU-1228 has the same front panel size and layout as the well known SX- series SWR/power meters and so fits perfectly into the ham shack. The PSU-1250 has the same design but is somewhat larger.


Technical Data
PSU-1228 PSU-1250
Input Voltage 180 - 240 VAC 220 VAC
Output Voltage 13.8V fixed or 9-15V adjustable
Output Voltage Regulation < 2%
Protection Short Circuit, limited to 28A Short Circuit, limited to 50A
Output Current 28A max., 20A continous 50A max., 40A continous
Ripple < 80mVpp at rated load
Fuse (Primary) 5A 8A
Size (without controls) 155 x 70 x 205mm (WxHxD) 195 x 85 x 280mm (WxHxD)
Weight ca. 1.5kg ca. 2.5kg
Order No.
PSU-1228 Switching Power Supply 28A 89.00
PSU-1250 Switching Power Supply 50A 129.00



Mini switching power supply, 13.8V/2.8A für FT-817 or VHF handheld radios. Size only 102 x 62 x 37mm, weight 300gr. Large input voltage range from 100 to 240V AC. Protection against overvoltage, overload and over temperature. DC cable with plug 2.1/5.5mm, with adaptor for FT-817. Input AC jack, removeable AC cable (Euro) included.

Order No.
MFJ-4103 59.80

Alle prijzen zijn inclusief BTW., maar exclusief verzendkosten.
Tussentijdse prijswijzigingen en typefouten voorbehouden.
Fabrikanten kunnen specificaties en uitvoeringen wijzigen.