12V/5W Dollhouse Miniature Plug-In TransformerRegular price $22.99
This transformer comes with a built-in circuit breaker, making it virtually burn-out proof. In the event of an overload, the breaker opens and removes voltage until the unit cools. Then the breaker resets itself and reapplies voltage to the output. It outputs an AC current; 500 milliamp powers up to seven 65 milliamp bulbs.