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The article reports that Georgia Power Co. is about to complete its advanced metering infrastructure (AMI) deployment. Georgia Power tested the concept by building five adapters using stock meter bases and revenue current transformers (CTs). Georgia Power ordered adapters to install a monitor every capacitor bank in a small operating headquarters.

Reports developments in manufacturing industry in the U.S. as of September 2003. Low salary offered by manufacturing companies to skilled workers; Increase of the manufacturing costs of motors and transformers; Decline of the average price of instruments.

Reports on the development of solid-state transformers by an engineering consortium led by Purdue University in West Lafayette, Indiana and the University of Missouri in Columbia, Missouri. Design and technicalities; Research sponsor; Developers of the equipment.

The article reports on 10 CFR Part 431, Energy Conservation Program for Commercial Equipment, Distribution Transformers Energy Conservation Standards: Final Rule introduced by the U.S. Department of Energy (DOE) which requires efficiency standards of distribution transformers on October 12, 2007. It notes that a distribution transformer has 60 hertz operation rating. According to engineer Larry Spielvogel, the DOE mandate on copper use decreases transformer efficiency.

Presents tips on directional antenna maintenance in the U.S. Benefit obtained from maintenance operations; Procedures in antenna monitoring readings; Causes of damage in radio frequency current transformers.

The article reports on the U.S. Federal Communications Commission (FCC) regulations regarding telephone line in the on-hook state. According to FCC regulations, a telephone line in the on-hook state must be galvanically isolated from the local ground. The figure shows one way to detect the presence of the direct current line-feed in both the off- and on-hook states while meeting the FCC regulations. A transformer-transfer impedance change is used for this purpose. If there's no dc on the line between tip and ring, then the n-channel FET Q1 shorts transformer T1's secondary. This loads the primary so the ac at the primary, generated by U1A, is minimal. Also, Q2 does not conduct and the #DETECT line is high, at +5 V. If there is a dc voltage higher than about 10 V on the line, Q1 does not conduct, the transformer secondary is open, and there are a couple of volts of ac on the primary of the transformer. The frequency of the Wien-bridge tone generator formed by U1A is about 20 kHz. Therefore, the waveform at the output, pin 1, is nearly sinusoidal.