An electronic circuit for measuring current in a working circuit is provided with a first operational amplifier having a positive input, a negative input, and an output connected to at least one in-line amplifier to form a first current path. A second operational amplifier having a positive ...
The current measurement circuit has a semiconductor device connected in series with the load. The potential over the semiconductor device is delivered to a fuzzy logic processor, which processes the potential data to deliver a corrected measure of the current. A number of semiconductor devices may ...
The tourist facilities on the Jungfraujoch in the central Swiss Alps have been continually improved over the last decades. The newest addition is the enlarged observation platform on top of the "Sphinx", a narrow rock ridge where an obse... W Steiner,U Graber,H. Keusen - ISRM International...
A peak value of current flowing in the actuation path at the end of an "on" phase is compared with a peak value of current flowing in the recirculation path at the start of the "off" phase in order to detect any malfunction of the circuit. An embodiment of the invention has the ...
A circuit has been designed to protect electrometers and other sensitive instrumentation from damage by electrical sparks. Measuring current is necessary in a variety of high-voltage applications, including the evaluation of ionizers designed to eliminate static charge. The currents are often small, pe...
A simple unit for measuring electrical current in complex (including coaxial) circuit sections is considered. A conductor section of the basic measured circuit, to which a light-emitting diode, a galvanic cell, and a regulating resistor are connected, is used as a shunt. A signal from the ...
An ion current in the combustion chamber of an internal combustion engine is measured by using the spark plug as an ion current sensor. The ignition circuit arrangement has an ignition coil or transformer with a primary winding forming a primary circuit and a secondary winding forming a secondary...
The initial loading or charging impulse is provided by a respective control circuit. The total sparking time at the respective spark plug thus corresponds to a sequence of individual impulses, each of which causes an ignition spark. The detection of the ignition current in the secondary coils is...
A first resistor, a second resistor, a transistor, and a third resistor connected in series between a ground potential and an output terminal of a power circuit are provided. In addition, a current-detecting resistor is inserted in series between a high-voltage site and an output terminal of...
Measuring current increases the chance of error. Discover ways to minimize these errors and learn how to eliminate them completely.