Power supplies with a 9v battery jack!! Center Positive or Center Negative

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DIY, Power_supply, Center_positive, Center_negative, Battery, 9v, Battery_jack, DC_jack, wiring

The image above could be useful when wiring up power supplies. Our new Pt2399 Dev Board, and our 555 timer only have two power connections, Vcc/V+ and GND. Following this diagram still gives you the option of using a DC jack or a battery jack to power your circuit. This will be posted under our tech page. Thank you!