| 摘要 |
<p>PURPOSE:To reduce the cost and to improve the operability of pickup switching by controlling an electronic switching element by a switch-on signal from a pickup and inputting the output of a sine wave generating circuit to an amplifying circuit. CONSTITUTION:The switch-on signal from pickups 27 and 26 connected to pickup connection terminals 12 and 13 is inputted to a control circuit 22 (the CPU of a device main body 21 or the like). The control circuit 22 outputs a pickup switching command corresponding to the pickup 26 or 27, which outputs this switch-on signal, to an electronic switching element 11. Thus, the electronic switch element 11 inputs the output of a sine wave generating circuit 23 to an amplifying circuit, to which the pickup 26 or 27 which outputs switch information is connected, out of plural amplifying circuits 24a and 24b.</p> |
