| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a print circuit board capable of easily selecting between a short-circuit state and an open state.SOLUTION: A battery 3 and an electric circuit 4 which is driven by the power from the battery 3 are connected to conduction holes 1 and 2 each of which goes through a board. When the terminals of a jumper are inserted into the conduction holes 1 and 2, the conduction holes 1 and 2 are short-circuited, and thus the electric circuit 4 can operate with the power from the battery 3. Each of the conduction holes 1 and 2 has lands 5, 6 formed by electrically connecting to each other. When a continuous and reliable short-circuit state is required, the short-circuit state is maintained by performing soldering on the land.</p> |
