21. Detail specification for solder-sealed quartz crystal units for oscillator applications. AA, BF, CX and BC/1 enclosures, 0.8 to 20 MHz and 3.0 to 30 MHz frequency ranges. Fundamental thickness-shear mode, AT-cut, for operation over wide temperature ranges (non-temperature controlled). Full assessment level. (15th October 1977) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (12 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
22. Detail specification for solder-sealed quartz crystal units for oscillator applications. AA, CX and BC/1 enclosures, 0.8 to 20 MHz and 3.0 to 30 MHz frequency ranges. Fundamental thickness-shear mode, AT-cut, for operation over narrow temperature ranges (temperature controlled). Full assessment level. (15th June 1977) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (10 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
23. Detail specification for solder-sealed quartz crystal units for oscillator applications. AA, CX and BC/1 enclosures, 17 to 75 MHz frequency range. Third overtone thickness-shear mode, AT-cut, for operation over narrow temperature ranges (temperature controlled). Full assessment level. (15th June 1977) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (10 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
24. Detail specification for solder-sealed quartz crystal units for oscillator applications. AA, CX and BC/1 enclosures, 50 to 125 MHz frequency range. Fifth overtone thickness-shear mode, AT-cut, for operation over wide temperature ranges (non-temperature controlled). Full assessment level. (15th June 1977) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (9 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
25. Detail specification for solder-sealed quartz crystal units for oscillator applications. AA, CX and BC/1 enclosures, 50 to 125 MHz frequency range. Fifth overtone thickness-shear mode, AT-cut, for operation over narrow temperature ranges (temperature controlled). Full assessment level. (15th June 1977) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (8 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
26. Detail specification for solder-sealed quartz crystal units for oscillator applications. AA, CX, BF and BC/1 enclosures, 17 to 75 MHz frequency range. Third overtone thickness-shear mode, AT-cut, for operation over wide temperature ranges (non- temperature controlled). Full assessment level. (15th October 1977) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (9 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
27. Detail specifications for silicon voltage-regulator diodes. (15th February 1971) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (9 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
28. Direct acting indicating analogue electrical measuring instruments and their accessories title. Special requirements for frequency meters Part 4, (7th May 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (20 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
29. Direct acting indicating analogue electrical measuring instruments and their accessories. Definitions and general requirements common to all parts Part 1, (15th June 1999) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (40 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
30. Direct acting indicating analogue electrical measuring instruments and their accessories. Special requirements for ammeters and voltmeters Part 2, (10th May 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (24 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗