摘要:

An inexpensive, moderately fast input converter, adder, and buffer memory is described for use with an NMR instrument. Speed is a few microseconds per 12‐bit data point and word length and size are essentially unlimited.

ISSN:0034-6748    

DOI:10.1063/1.1137401

出版商:AIP    

年代:1983

数据来源: AIP

摘要:

A simple system of electrostatic deflection plates with three electrodes is described.

ISSN:0034-6748    

DOI:10.1063/1.1137402

出版商:AIP    

年代:1983

数据来源: AIP

摘要:

Significant improvements in a constant current ballast circuit to provide linear programmed current control at levels up to 5 A, with minimum voltage drop, can be realized.

ISSN:0034-6748    

DOI:10.1063/1.1137403

出版商:AIP    

年代:1983

数据来源: AIP

摘要:

An apparatus has been designed for direct viewing of centering errors in cemented doublets. The centering errors can be correctedinsituduring cementing. This enables easy rectificiation and is applicable both to thermoplastic and thermosetting cemented lens systems. Multiple lenses can also be easily centered and cemented using this apparatus.

ISSN:0034-6748    

DOI:10.1063/1.1137404

出版商:AIP    

年代:1983

数据来源: AIP

摘要:

Porous tungsten cathodes have electron emission characteristics similar to those of plain carbon cathodes, and carbon cathodes with many grooves on the front surface and with silicon resin coating on the lateral surface are superior in emission current to plain carbon cathodes by a factor of 50%.

ISSN:0034-6748    

DOI:10.1063/1.1137407

出版商:AIP    

年代:1983

数据来源: AIP