MATCHING METHOD BETWEEN FUNCTION ELEMENT AND EXTERNAL CIRCUIT AND FUNCTION ELEMENT

摘要

PURPOSE:To match a function element such as a hybrid integrated circuit and external circuit with high accuracy by connecting or disconnecting connecting terminals connected to an electronic circuit element so as to change the electric characteristic. CONSTITUTION:Connecting terminals P1-Pi fitted to a printed wiring board 15 are connected to an external circuit 17 and used to activate a hybrid integrated circuit 16 and the external circuit 17. In matching the integrated circuit 16 and the external circuit 17 in this operating state, a conductor 20 connecting the connection terminals Q1-Q4 is disconnected selectively. Then one or plural resistors among resistors R1-R5 are connected in parallel and a specified parallel resistance value is obtained. Thus, highly accurate matching is attained easily while the function element and the external circuit are activated.