DIN 57721-9012 ; DIN VDE 0721-9012:1980-05 ; VDE 0721-9012:1980-05 [Withdrawn] references following documents:
| Document number | Edition | Title |
|---|---|---|
| IEC 60146 | 1973 | Semiconductor convertors More |
| Document number | Edition | Title |
|---|---|---|
| IEC 60146 | 1973 | Semiconductor convertors More |