
9 Volts 300mA or more (500mA is common and will work fine) and make sure the TIP is set to Positive "+".
Look for the opening in the centre of the polarity diagram to face the "+" symbol.
Modified on: Fri, 9 Jan, 2026 at 6:34 AM

9 Volts 300mA or more (500mA is common and will work fine) and make sure the TIP is set to Positive "+".
Look for the opening in the centre of the polarity diagram to face the "+" symbol.
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