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Where can I get an AC power supply for servos?

April 26, 2017AC power servos supply

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Where can I get an AC power supply for servos?

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Servos are designed to operate from four-cell battery packs supplying 4.8 to 6.0 Vdc. Under load, they can draw pretty heavy current (100s of mA). Being designed for battery power, they aren’t very tolerant of power-supply noise. An ideal power supply is a linear, regulated 5Vdc supply capable of 1A or more output. Jameco carries quite a few suitable supplies–mostly OEM surplus from video game consoles. Here are some examples from their April 2000 catalog: • Atari 5W supply, part number 116089: 5V at 1A • Lexmark 7.5W supply, part number 160899: 5V at 1.5A • Atari 6.1W supply, part number 147467: 5V at 0.72A and 12V at 0.21A You’ll have to cut off the connectors on these supplies’ outputs and determine voltages and polarity with a meter, but you’ll be getting a husky, reliable power supply for less than $10. The 12V output from the 6.1W supply can be used to power the Mini SSC electronics, replacing the 9V battery too.