Powering a 7.4V servo with a wall wart

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hi, i'm using guy:

hs-7940th servo

which has operating voltage of 4.8v - 7.4v

i want run @ maximum voltage maximum torque out of it... 7.4v

the problem want use dc adapter/wall wart power it, instead of batteries... can't seem find adapter 7.4v. have 1 9v i'm afraid going destroy servo... can't seem find maximum voltage number anywhere servo.

would okay running 9v or burn servo?

if won't work, how can step down voltage 9v 7.4v? i've never done i'm unsure of best method go it.

could servo handle 9v adapter? servo rather expensive i'd rather not plug in , find out...

thanks

a power supply should linked power ratings.... ...if operates @ particular voltage (rms voltage), need have kind of specified value of rms current device able happily operate on continual basis - under normal operating conditions.

so if know sort of current levels motor requires (including maximum current requirement)..... can work toward getting or building power supply meet requirement.

there step-down (buck) converters can purchased online (or elsewhere). got make sure power output capabilities adequate. converters have specifications tell voltage range needed input voltage...and output voltage range capable of (if converter has adjustment dial set output voltage).


Arduino Forum > Using Arduino > Motors, Mechanics, and Power (Moderator: fabioc84) > Powering a 7.4V servo with a wall wart


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