摘要:

The paper first deals with the general principles of, and the conditions to be fulfilled by, coil ignition apparatus for internal combustion engines.It then describes a simplified treatment of the induction coil, regarded as a closely-coupled system with damping due to secondary loading, an assumption which is found to give results agreeing fairly well with practice.From this theory is developed a basis of coil design, enabling optimum values to be chosen so as to meet given conditions and indicating the limits which are met under extreme conditions of operation, generally at high engine speeds and low battery voltages.Methods of extending the range of operation, when necessary, are then dealt with, and special designs are described which have been developed with a view to meeting extreme conditions of operation.A further section deals briefly with the constructional features of modern coil systems, and with the principal points embodied in the various details.

DOI:10.1049/jiee-1.1932.0001

出版商:IEE    

年代:1932

数据来源: IET

DOI:10.1049/jiee-1.1932.0005

出版商:IEE    

年代:1932

数据来源: IET

DOI:10.1049/jiee-1.1932.0006

出版商:IEE    

年代:1932

数据来源: IET

摘要:

In order to minimize the effect of extraneous disturbance in submarine telegraph cables operated duplex, it has been the practice for some time past to make the earth connection of the artificial line several miles from shore. For this purpose a length of twin-core cable was laid, the seaward end of the conductor of the second or sea-earth core being connected to the sheathing wires.With the advent of the loaded cable, in order to take full advantage of the possible great gain in speed a more effective method of interference elimination became necessary. The method now generally adopted provides for a twin core extending from theshore to a point where the cable reaches deep water. The seaward end of the second core is joined to a length of core having a stranded manganin-wire conductor, the free end of which is connected to the sheathing wires in the usual manner. This second core is termed the “balanced sea-earth”This paper deals with the problem of computing the value of the resistance of the manganin core for a taper-loaded cable.Mention is made of the function of a taper-loaded cable as a high-speed duplex telegraph cable.High or low freqencies referred to in the paper are within the band of telegraph signalling frequencies.

DOI:10.1049/jiee-1.1932.0009

出版商:IEE    

年代:1932

数据来源: IET

DOI:10.1049/jiee-1.1932.0010

出版商:IEE    

年代:1932

数据来源: IET

DOI:10.1049/jiee-1.1932.0011

出版商:IEE    

年代:1932

数据来源: IET