Monitor for checking electric-field meters

Portable monitor can be used to check electric-field meters on location. Faulty communication line or faulty unit can be determined on the spot

Digital automatic gain amplifier

A circuit is described for adjusting the amplitude of a reference signal to a predetermined level so as to permit subsequent data signals to be interpreted correctly. The circuit includes an operational amplifier having a feedback circuit connected between an output terminal and an input terminal; a bank of relays operably connected to a plurality of resistors; and a comparator comparing an output voltage of the amplifier with a reference voltage and generating a compared signal responsive thereto. Means is provided for selectively energizing the relays according to the compared signal from the comparator until the output signal from the amplifier equals to the reference signal. A second comparator is provided for comparing the output of the amplifier with a second voltage source so as to illuminate a lamp when the output signal from the amplifier exceeds the second voltage

Microcomputerized electric field meter diagnostic and calibration system

A computerized field meter calibration system which includes an apparatus for testing the calibration of field meters normally utilized for measuring electromagnetic field potentials is described. A reference voltage is applied to the field meter for causing signals to be produced on the output terminals thereof. A bank of relays is provided for selectively connecting output terminals of the field meter to a multiplexer by means of a digital voltmeter and an oscilloscope. A frequency-shift-keyed receiver is also connected to one of the terminals of the field meter for transmitting and converting a frequency shift keyed signal to a digital signal which is, subsequently, applied to the multiplexer

The Limits Placed by EEC Law on Territorial Protection in Patent Licensing: A Case Study in Community Law-Making

In this article, Mr. Holley examines the ways in which the EEC Commission\u27s interpretations of the EEC Treaty, European Court decisions, and suggestions made by Member States and industry influence the development of EEC law. By focusing on the Commission\u27s draft patent licensing regulation, the author identifies existing conflicts between preserving patent rights and the EEC objectives of protecting competition and the free flow of goods among the Member States

The Limits Placed by EEC Law on Territorial Protection in Patent Licensing: A Case Study in Community Law-Making

In this article, Mr. Holley examines the ways in which the EEC Commission\u27s interpretations of the EEC Treaty, European Court decisions, and suggestions made by Member States and industry influence the development of EEC law. By focusing on the Commission\u27s draft patent licensing regulation, the author identifies existing conflicts between preserving patent rights and the EEC objectives of protecting competition and the free flow of goods among the Member States

Diamond Dust

9

An automatic lightning detection and photographic system

Conventional 35-mm camera is activated by an electronic signal every time lightning strikes in general vicinity. Electronic circuit detects lightning by means of antenna which picks up atmospheric radio disturbances. Camera is equipped with fish-eye lense, automatic shutter advance, and small 24-hour clock to indicate time when exposures are made

Mother Ghost

9