摘要:

Simple ratios are computed which very closely approximate the ratio of the length of the civil second to that of the sidereal second, and which define gear trains for converting civil into sidereal time.

ISSN:0034-6748    

DOI:10.1063/1.1751749

出版商:AIP    

年代:1934

数据来源: AIP

摘要:

A voltage stabilizing circuit employing one thermionic pentode vacuum tube and one standard 45 v dry battery is described. When used in connection with a conventional a.c. to d.c. rectifier the stabilizer fully compensates for fluctuations in the a.c. mains and provides a d.c. output of zero to several thousand volts in which the fluctuations are less than 1 part in 5000. No current is drawn from the dry battery, hence its useful life is a year or more. Circuit constants are given for stabilizers supplying 85, 135, 600, 1000 and 1400 volts at currents from 15 to 0.5 milliamperes. A general theory of all similar triode, tetrode and pentode stabilizer units is derived, and the impracticability of eliminating the single dry battery is pointed out.

ISSN:0034-6748    

DOI:10.1063/1.1751750

出版商:AIP    

年代:1934

数据来源: AIP

ISSN:0034-6748    

DOI:10.1063/1.1751751

出版商:AIP    

年代:1934

数据来源: AIP

ISSN:0034-6748    

DOI:10.1063/1.1751752

出版商:AIP    

年代:1934

数据来源: AIP

ISSN:0034-6748    

DOI:10.1063/1.1751753

出版商:AIP    

年代:1934

数据来源: AIP

ISSN:0034-6748    

DOI:10.1063/1.1751754

出版商:AIP    

年代:1934

数据来源: AIP