DC/DC Regulators
At RFWEL we offer highly efficient DC switching regulators for your DC powered equipment. Direct Current (DC) power is very critical in wireless equipment operation and is preferred because of a few reasons within the communications sector. Typically batteries can generally only provide relatively low-voltage DC power thus the need for converters. The regulators can be categorized into 4 as follow:
- Step-Down (Buck Converters)
- Step-Up (Boost Converters)
- Step-Up/ Step-Down (Buck or Boost Converters)
- Negative Output
Types of DC-DC Converters
Buck/ Boost Converter Voltage Graph
See table below or search for DC/DC regulators meeting specific requirements using:
DC/DC Step-Up (Boost) Filter: 
DC/DC step-down (Buck) Filter:
| Compare DC-DC Converters Specs | ||
| Item | Key Specifications | Available at these Online Market Places |
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Samlex STEP10 (MPN: STEP 10)
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Type: DC/DC Step-Up (Boost) Input Voltage: 12 VDC Output Voltage: 24 VDC |
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Samlex SDC-30
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Type: DC/DC Step-Down (Buck) Input Voltage: 24 VDC Output Voltage: 13.8 VDC |
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AC/DC Power Supplies
An AC-DC Power supply will receive AC power then convert it to DC voltage at various levels to connected equipment. The polarity of the output power can either be (+/ -) as specified for each device.
AC-DC Supply Voltage Graph
See table below or search for power adapters (AC/DC converters) meeting specific requirements using this filter:
| Compare AC-DC Power Supplies Specs | ||
| Item | Key Specifications | Available at these Online Market Places |
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Venstar ACC0800
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Input Voltage: 120 VAC Output Voltage: 3 VDC Current: 0.2 A Input Connector: NEMA 1-15P (2 prong plug) Output Connector: 2.1mm Barrel Plug (Male) |
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Open-Mesh PS12VUS
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Input Voltage: 120 VAC Output Voltage: 12 VDC Current: 1 A Input Connector: NEMA 1-15P (2 prong plug) Output Connector: 2.1mm Barrel Plug (Male) |
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Tycon Power Systems TP-PS18V
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Input Voltage: 120 VAC Output Voltage: 18 VDC Current: 0.75 A Input Connector: NEMA 1-15P (2 prong plug) Output Connector: 2.1mm Barrel Plug (Male) |
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EcoBee EB-PS-01
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Input Voltage: 120 VAC Output Voltage: 24 VDC Input Connector: NEMA 1-15P (2 prong plug) Output Connector: 2.1mm Barrel Plug (Male) |
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Sierra Wireless 2000579
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Input Voltage: 120 VAC, 240 VAC Output Voltage: 12 VDC Current: 1.5 A Input Connector: NEMA 1-15P (2 prong plug) Output Connector: 2.1mm Barrel Plug (Male) |
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DC/AC Power Inverters
Typical wireless sites are run on DC power fed from battery banks/ backup UPS to offer a means of backup and uninterrupted operation in the absence of mains AC or solar power. Not all equipment at the wireless site will run on DC, some will be powered via AC. Need therefore arises for DC-AC inverters for different voltages.
When choosing an inverter consider the following:
- Match inverter voltage to backup battery/ UPS output voltage
- Determine the total power consumption of loads to be connected and ensure the watteage of your inverter exceeds this by 30%. (Peak wattage of inverter should exceed peak load wattage)
- Wave output of the inverter (Some wireless devices are sensitive to square waves and require perfect sine waves). To achieve a perfect sine more circuitry will be needed to filter the waveform thus driving the inverter prices up.
DC-AC Inverter Voltage Graph
See table below or search for high efficiency power inverters (DC/AC converters) meeting specific requirements using this filter:
| Compare DC-AC Power Inverter Specs | ||
| Item | Key Specifications | Available at these Online Market Places |
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Tycon Power Systems INV-12-120-400
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Input Voltage: 12 VDC Output Voltage: 120 VAC, USB (5V), 12 VDC Current: 8 A Input Connector: Wire Terminal Output Connector: NEMA 5-15R (3 prong receptable), USB Socket, Cigarette Lighter Socket |
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To search power solutions specific to your wireless equipment:
See also Power Tap page for solutions on pulling power (AC or DC/POE) from outdoor photo-cell controlled streetlight or lighting post.