BS CP1005(1962) : LATEST

Foreword
SECTION 1: INTRODUCTION
101. Scope
102. Definitions
SECTION 2: RECOMMENDATIONS FOR ALL ELECTRONIC VALVES
201. General
202. Dimensions
203. Ratings
204. Heater or filament voltage regulation and supplies
205. Mounting
206. Ventilation
207. Heater-cathode insulation
208. D.C. connections between the cathode and other
       electrodes
209. Control characteristics with directly-heated
       cathode
210. Control-grid voltages and currents
211. Screen-grid voltages
212. Suppressor-grid voltages
213. Microphony
214. Delayed switching of h.t.
215. Special considerations
216. Damage to equipment
217. Storage and transit
SECTION 3: ADDITIONAL RECOMMENDATIONS FOR DOMESTIC
RECEIVING VALVES
301. Introduction
302. Heater or filament voltage regulation and supplies
303. Limiting values of grid-circuit resistance
SECTION 4: ADDITIONAL RECOMMENDATIONS FOR CATHODE-RAY
TUBES
401. Introduction
402. Dimensions
403. Ratings
404. Heater-voltage regulation
405. Mounting
406. Handling
407. Ventilation
408. Control-grid voltages
409. Voltages on electrodes intermediate in potential
       between cathode and final anode
410. Special considerations
411. Storage and transit
SECTION 5: ADDITIONAL RECOMMENDATIONS FOR RECTIFIERS,
INCLUDING GRID-CONTROLLED RECTIFIERS (THYRATRONS)
501. Introduction
502. Ratings
503. Mounting
504. Ventilation
505. De-ionization time or recovery time
506. Use of rectifiers in parallel
507. Rectifiers with ionically heated cathodes
508. Cathode heating
509. Effects of r.f.
510. Interference from gas-filled rectifiers
511. Grid-controlled rectifiers (thyratrons)
512. Gas reservoir
SECTION 6: ADDITIONAL RECOMMENDATIONS FOR PHOTOCELLS
601. Introduction
602. Dimensions
603. Ratings
604. Stability
605. Intermittent or pulse operation
606. Modulation frequency response
607. Relative spectral response
608. Microphony
609. Mounting and insulation
610. Ambient temperature
SECTION 7: ADDITIONAL RECOMMENDATIONS FOR TRANSMITTING
VALVES
701. Introduction
702. Heater of filament voltage
703. Mounting and installation of large valves
704. Ventilation and cooling
705. Multi-valve working
706. Application of high voltages
707. Storage and transit
708. Use of transmitting valves in r.f. heating
       equipment
SECTION 8: ADDITIONAL RECOMMENDATIONS FOR COLD-CATHODE
GAS-FILLED VALVES OF GLOW-DISCHARGE & ARC-DISCHARGE TYPES
801. Introduction
802. Definition of terms
803. Ratings
804. Special considerations
805. Mounting
806. Effects of temperature
807. Series and parallel operation
808. D.C. connection of unused electrodes
809. Ionisation and de-ionisation
810. Dangerous radiation
SECTION 9: ADDITIONAL RECOMMENDATIONS FOR MAGNETRONS
901. Introduction
902. Ratings - General
903. Special characteristics
904. Heat operation
905. H.T. supply
906. Magnet design
907. Stray fields
908. Cathode connections
909. Output connections
910. Loading
911. Installation
912. Dangerous radiation
913. Storage and transit
SECTION 10: ADDITIONAL RECOMMENDATIONS FOR SPECIAL
QUALITY VALVES
1001. Introduction
1002. General
1003. Choice of type
1004. Ratings
1005. Circuit design
1006. Heater surges
1007. Effects of interface impedance growth
1008. Mounting
1009. Temperature considerations
1010. Handling
1011. Preventive maintenance

Gives guidance to designers of equipment using electronic valves, so that optimum performance and life may be secured. Relates to all applications of valves by where a higher degree of reliability is required, additional or more stringent precautions may be necessary. Not intended to cover recommendations for the safety of personnel but attention is drawn to any information regarding ionising radiation which the manufacturer may publish in connection with the devices covered by this Code.