Power supply BLOW 3835# switching 12V 500mA connector 2.1/5.5 (center negative)

Compact switching power supply BLOW 3835# provides a regulated 12 V DC output at up to 500 mA through a standard 2.1/5.5 mm barrel connector wired center negative. The unit is intended for low‑power electronics and appliances that require a stable 12V input and a compact plug‑in form factor. The supply uses switching regulation to maintain output voltage under varying load conditions while minimizing heat and overall size.

Advantages

The switching design yields stable voltage regulation with relatively high efficiency and reduced thermal dissipation compared with linear adapters. Its small enclosure and common barrel connector make the power supply easy to integrate with routers, CCTV cameras and many small 12V devices. The center negative polarity matches devices that require a negative tip configuration, avoiding misconnection when the correct polarity is confirmed. The 500 mA current rating supports small LED strips, low‑power network equipment and other peripherals within the stated output limits.

Suitable for

• Low‑power routers and network accessories
• CCTV cameras and surveillance modules with 12V center‑negative input
• Small LED strips and lighting modules up to 6 W
• Portable audio devices and small consumer electronics requiring 12 V DC, 500 mA
• Development boards and hobby electronics projects with matching connector and polarity

Key specifications

• Output voltage: 12 V DC (regulated)
• Maximum output current: 500 mA
• Connector type: 2.1/5.5 mm barrel (center negative)
• Regulation type: switching (SMPS)
• Intended use: indoor, plug‑in external power adapter
• Typical power output: up to 6 W

How to use

Confirm that the target device accepts 12 V DC and that its current consumption does not exceed 500 mA. Verify the connector polarity is center negative before connecting. Insert the barrel connector fully into the device socket and plug the adapter into a suitable AC mains outlet. Allow a brief stabilization period after powering on to ensure the regulated output reaches nominal voltage. Disconnect power by unplugging from the mains and then from the device if required.

Usage recommendations

Use the adapter indoors and avoid exposure to moisture or extreme temperatures. Do not exceed the 500 mA rating; if the device demands higher current, select an adapter with a greater current capacity. If uncertain about polarity or compatibility, consult the device documentation or measure the connector with a suitable meter before use.