1756-IF8U

1756-IF8U1756-IF8U

针对发射机输出功率的下降，我们首先对机器面板上激励级图像变频器中的电位器进行了调整，尝试通过调节它来增大发射机的功率输出，但发现此时几乎无法增大发射机的功率输出，即发射机此时*大输出功率就在W左右，功率再也上不去了。根据此现象，我们组织有关人员进行了检修。根据以往的经验，检修人员首先检查了该部发射机此时六只末级功放模块工作电流的大小情况，通过检查，我们发现伴音末级功放模块的工作电流基本正常，而图像推动模块以及四只图像末级功放模块的工作电流均比原始记录要小得多，说明发射机的输出功率确实是下降了，并且问题可能在图像通道上。但通过对四只图像末级功放模块工作电流均同步下降的现象进行分析说明，故障的原因可能在激励器或图像推动模块中，是由于激励器或者图像推动模块的输出信号增益不够，从而导致了发射机输出功率的不足。

GOULD TRSR 20 TRI-ONIC SHAWMUT TIME DELAY CLASS R 20A A

FERRAZ SHAWMUT A3T200 AMP-TRAP CLASS T 200A AMP 300V-AC

NEW BUSSMANN LPJ-300SPI LOW-PEAK INDICATOR 300A AMP 300

MCGRAW-EDISON FA11A80R 80A AMP 15.5KV-AC FUSE B328207

COOPER BUSSMANN JCL-A-3R 100A AMP 5.08KV-AC FUSE B45300

CEFCO CRS-R 250 CLASS RK5 CEFCON TIME DELAY 250A AMP 60

COOPER BUSSMANN FWP-450A SEMICONDUCTOR 450A AMP 700V-AC

NEW BUSSMANN FRS-R-350 FUSETRON DUAL ELEMENT 350A 600V

GOULD A240R-6R SHAWMUT AMPTRAP CURRENT LIMITING 6R AMP

NEW FUSETEK FC467-.5E PT .5E AMP 15.5KV-AC FUSE B401790

NEW BUSSMANN 15.5FFVHK100E DUAL HRC 100E AMP 15.5KV-AC

NEW FUSETEK FC467-.5E .5E AMP 15.5KV-AC FUSE B401787

NEW EATON 15CLPT-1.5E CUTLER HAMMER 1.5E AMP 15.5KV-AC

BUSSMANN 170M1468 HIGH SPEED 125A AMP 700V-AC FUSE B421

NEW GOULD A480R12R-1 AMP-TRAP 5.08KV MAX 12R AMP 2400/4

GOULD SHAWMUT TRSR 100 TRI-ONIC TIME DELAY 100A AMP 600

NEW COOPER BUSSMANN AGW-10 10A AMP 32V-AC FAST ACTING F

NEW COOPER BUSSMANN AGX-1 1A AMP 250V-AC FAST ACTING GL

NEW COOPER BUSSMANN AGX-1/4 1/4A AMP 250V-AC FAST ACTIN

NEW COOPER BUSSMANN AGA-1 125V-AC 1A AMP FAST ACTING GL

NEW COOPER BUSSMANN AGX-3/4 3/4A AMP 250V-AC FAST ACTIN

NEW COOPER BUSSMANN AGW 15 15A AMP 32V-AC FAST ACTING F

GOULD A6D175R AMP-TRAP 2000 SHAWMUT TIME DELAY RK1 175A

NEW BUSSMANN RES 150 SUPER-LAG RENEWABLE 150A AMP 600V-

NEW WESTINGHOUSE 677C452G02 CLE-PT INDUSTRIAL 0.5E A A

NEW GOULD A13X5-2 AMPTRAP 5A AMP 130V-AC FUSE B400914

NEW COOPER BUSSMANN KTK-3 LIMITRON FAST-ACTING 3A AMP 6

COOPER BUSSMANN PON20 TYPE P FAST ACTING CLASS K5 20A A

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