| 摘要 |
PURPOSE:To vary the connection of signal wirings on a printed board easily by adding a cylinderical pin, an inner wall thereof is insualted, and a connecting switching switch. CONSTITUTION:A socket for an IC is constituted by a socket proper 1, a cylindrical pin 2, an inner wall thereof is insulated, and a connecting switching switch 3. An IC4 is connected to the cylindrical pin 2 through a contact 9 from a lead 8, connected to an inner layer signal pattern 7 from a through-hole on a printed substrate 5 and connected to the printed board 5. When the switch 3 is brought to an open state, a lead 2' for the cylindrical pin 2 and the lead 8 are separated, and the lead 8 is not connected to the inner layer signal pattern 7 in the printed substrate 5. Accordingly, the IC4 and the inner layer signal pattern 7 can be disconnected or connected easily only by switching the switch 3. |
