| 摘要 |
1,061,315. Phase comparison circuits. BILLMAN-REGULATOR AB. Oct. 27, 1965 [Oct. 28, 1964], No. 45393/65. Heading H3A. In a phase comparator, two signals to be compared are applied at terminals 1, 2 and 3, 4 respectively. Alternate half-cycles of the supply across 1, 2 switch on transistor T to allow current to flow through relay L1 or L2 depending on whether the signal at 3, 4 is in-phase or out-of-phase with that at 1, 2. |
