FX-502J の AC アダプタを 12V/3.6A 汎用品に変更した
先日、アンプである FX-502J のオペアンプを OPA1612 に交換した際、動作電圧に合わせる形で 18V/2A の AC アダプターに変更していた。OPA1612 の動作電圧が ±2.25~...
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