12V Battery Pack

A 12V battery pack is often provided from a car battery or from a rechargeable 'alarm' style battery.

A 12V Battery Pack must never be connected directly to a PICAXE which is rated only for 5V operation. Doing so will damage and likely destroy the PICAXE.

The 12V supply should be taken through a voltage regulator and then to the PICAXE and rest of the circuit.

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Schematic

PCB

Create Module

Do not use a 12V battery pack directly with the create system.
Use a 4.5V battery pack (3 x AA/LR6 cells) instead.

Bill of Materials

DescriptionCodeQty
7805 Regulator REG001 1 Buy Now
1N4001 Diode RES041 1 Buy Now
100nF Capacitor CAP001 2 Buy Now
100uF Capacitor CAP006 2 Buy Now

Simulation

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Comments

  • Posted by nick12ab

    Note to school children: Take extra care when using any large lead acid battery including car batteries) as it can easily blow up an unsuitably rated or incorrectly connected component and will produce a massive spark if inadvertently shorted.

    I personally think a fuse should be included when using a lead acid battery.

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