https://www.atbatt.com/ddu090100c2550-9v-1000ma-ac-to-dc-linear-unregulated-power-supply/
9V Power Supply|AC to DC Linear Unregulated 9V 1000mA Wall Adapter
9V Power Supply from AtBatt.com is an AC to DC Linear Unregulated power supply that is rated at 9V 1000mA. Replaces part number DDU090100C2550.
ac to dc linear unregulatedpower supply