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Aviation Electronics

Aviation Electronics May 1971 40 AIRCRAF T ENGINEERING Details of Electrical and Electronic Apparatus with Applications in the Maintenance and Operation of Aircraft, Missiles and Space Vehicles HERMETIC HIGH-ISOLATION MICROWAVE its high accuracy and low response to vibration and SWITCH noise. A miniature coaxial switch for use with Amphenol's Further information is available from Bell & Howell recently introduced SMA connectors, has been de­ Ltd., Electronics & Instruments Gp., Lennox Road, mance and then order a connector to suit. The op­ veloped by the company, based at Thanet Way, Basingstoke, Hants. tions available include single or double-sided contacts, Whitstable, Kent, to give complete hermetic protec­ high quality or commercial-grade gold-plated con­ tion in all environments. tacts, from 5 to 62 ways, end fixing feet, and solder or DIGITAL TIMING/COUNTING UNITS The new SPDT switches, part of Amphenol's wrap terminations in a number of styles. Crouzet Ltd., of Brentford, Mddx. have introduced expanded 303 series, provide 60 dB minimum cross­ Available as Series 562 (0·150 in.) and Series 5124 a high-quality flexible range of electronic digital talk at 18 GHz. VSWR at this frequency is less than (0·156 in.), modular connectors feature precision tachometers/counters/timers. The basic instrument 1-5:1 and insertion loss is only 0·5 dB maximum. The phosphor-bronze contacts and high quality diallyl is a 10 kHz electronic counter, with up to 10 Nixie new switches are ideally suited for applications where digital read-out tubes. Thumb-wheel switches can phthalate mouldings. The patented UECL contact a combination of maximum moisture resistance, be used to predetermine a count, and the instrument permits large areas of contact surface to mate with the minimum crosstalk interference and compact size is will then count either up or down, and give a relay prepared board contacts, providing even pressure, required. low wear rate, and optimum conductivity. or electronic output at the end of the count. The hermetic scaling offers complete contamina­ Further information may be obtained from Ultra Most types of transducer can be used directly tion protection within the switch under all environ­ Electronics (Components) Ltd., Fassetts Road, Loud- with these instruments without preamplifiers, and mental conditions as well as power handling capability water, Bucks. semiconductor inputs can be germanium, silicon or at any altitude equal to sea level rating - 50 watts photo-diode. CW. Special options offered on the tachometer version PRECISION MEASURING AMPLIFIER In conjunction with the firm's hardened beryllium include BCD output for a printer, no visual display, Bruel & Kjaer of Denmark who market their copper SMA connectors, giving superior performance input multiplier or divider, and a memorising display. equipment in the U.K. through B & K Laboratories over competitive stainless steel types, the new switches Digital programmer options include no visual dis- Ltd., have announced a new measuring amplifier. can handle 50 watts of r.f. with an operating time of display, fixed preselection, and up/down counting. Known as the 2607, it is a multi-purpose instrument 15 ms. Contact resistance is 60 milliohms. Excluding All models are available for 19 in. rack mounting, particularly designed for sound and vibration measure­ connectors the switch measures 0·50 in. deep by 1·34 or else in an enclosed case, whose dimensions all ments. in. wide by 1·16 in. high. round are slightly larger. The reek-mounted version The 2607 has interchangeable scales to allow direct Non-hermetically sealed high isolation microwave measures 19 in. × 12½ in. deep × 3 ½ in. high. reading of sound level, acceleration, velocity, dis­ switches capable of handling 60 watt through 12·4 Further information may be obtained from placement, power spectral density, etc. when used GHz are also available with Type N, TNC or BNC Crouzet Ltd., Thanet House, High Street, Brentford, with different transducers. Equipped with the B & K connectors. Standard versions measure 1 in. by Mddx. condenser microphones it fulfils and exceeds the 2·688 in. by 2·125 in., excluding connectors. IEC 179 specification for precision sound level Temperature range for all high isolation Amphenol A LOW COST COMPUTER FAMILY meters. A special feature of the 2607 over the 2606 microwave switches is minus 55 to plus 85 deg. C; Honeywell Information Systems Ltd. have launched released last year is a built-in lin-log converter and a altitude range is zero to 70,000 ft.; shock characteris­ in Great Britain a new family of four time-sharing rectifier allowing+peak, —peak and max. peak tics are per MIL-S-3928B - namely 15 g operating; computer systems. indication in addition to the r.m.s. Impulse, and vibration (also per MIL-S-3928B) is 10 g from 10 to Called the H1640 Series, the computers are aimed Impulse Hold indications.. The lin-log converter 2000 Hz. All switches can be provided with coil at the rapidly growing market for internal time-sharing gives a 50 dB display on the meter and 60 dB dynamic voltages of 6, 12, 26,48, 120 V d.c. and 115 V a.c. facilities, and offer research, educational and com­ range on the output. The peak indication makes the mercial organisations a 'two dimensional' computing amplifier ideal for measurements on impulsive signals. capability in a single system. Furthermore, the meter time constant is selectable SEMICONDUCTOR PRESSURE The H1640 family can be used as true time-sharing up to 300 sec allowing measurements on narrow bands TRANSDUCER computers to provide comprehensive problem- of noise. Bell & Howell's new typo 4-420 bonded semi­ solving facilities to a network of terminals. Alter­ Other features of the 2607 Measuring Amplifier conductor strain gauge pressure transducer is designed natively, they can be switched to local batch proces­ include Sensitivity 10 µV to 300 volts, built-in A, B, for applications requiring maximum performance sing for handling on-site tasks. C and D weighting networks, built-in power supply with regard to power, weight, reliability and accuracy. Complementing the company's time-sharing bur­ for condenser microphones, frequency range 2 Hz - Available in high and low pressure ranges, the eaux, which service over half of the British problem- 200 kHz and facilities for the connection of external transducer has an accuracy of plus or minus 0·15 solving terminal market, the H1640 Series incorpor­ filters. Further information may be obtained from per cent FRO or better, a high natural frequency of ates a simple but powerful time-sharing command C. E. Osmond, B & K Publicity Division, 59 Union greater than 75 kHz in the 0-5000 lb./sq. in. range, structure making it easy to learn for the 'first time' St., London, S.E.I. and a full range output of 250 mV d.c. plus or minus user, and yet offering the wide range of features 1 per cent at rated excitation. It is small enough to demanded by experienced users. This structure, which MINIATURE EXPLOSIVE ACTUATOR fit into most pressure measuring applications: length forms the basis for all four members of the H1640 The Atlas 1MT114 Miniature Piston Actuator, an 1·7 in., diameter 0·75 in. series, enables users, as their needs grow, to develop explosive-actuated device for producing linear and extend their time-sharing facilities with only the The transducer has a fully welded chamber for motion, has been introduced by Kynmore Engineering smallest additional investment. gauge or absolute measurements of fluids compatible Co. Ltd., London. with type 17-4 PH stainless steel. The high millivolt The low-cost H1642 can satisfy the needs of sub­ Compact in size, light in weight, and highly reliable output permits its use directly with conventional scribers sharing some 40 terminals, for whom a broad and rugged, the actuator is available with a variety measuring equipment without requiring costly range of languages, from Fortran to Teach, is in­ of squibs with different firing characteristics. Its peripheral amplification devices. stantly available to solve their problems. Also characteristics make it ideal for aerospace applications. Silicon strain sensing elements give the transducer available at the 'touch of a keyboard' would be more It can be used to lock a device and prevent rotary or than 200 ready-to-use scientific and commercial linear motion, release a device and hold it in place, applications programs, all of them tried and tested push mechanical loads, cut wires or cables, fire a on the larger H1648 time-sharing system. primer or stab detonator, indicate the presence of Major software innovations for the series include unwanted electrical pulses, operate switches or relays, the provision of Honeywell's DAP 16 assembly puncture a container, uncage a gyroscope, destruct language on all systems, and Cobol on all but the high-security equipment, or for many other applica­ H1642. tions. Minimum all-fire for a Type G squib, at minus INCREASED CONNECTOR PRODUCTION 65 deg. F and 10 milli-seconds function time can be Ultra Electronics (Components) Ltd., report that as low as 1·0 amp. A load of 20 lb. can be moved. increased demand for modular connectors in the Unfired body length of the 1MT114 is ·755 inch 0·150 in. and 0·156 in. pitch series can now be more maximum. Stroke is 5/16 in. Outside diameter is readily absorbed as a result of considerable invest­ ·133 in maximum. ment in new tools and presses. This unit is part of a range which also includes A characteristic of the modular connector is pyrotechnic table cutters, a comprehensive range of increased versatility, as any connector can be specified explosive-actuated single- and multiple switches by the equipment designer with a number of options. (some with time delay), and electrically operated Instead of tailoring circuits and circuit boards to fit matches. one of the many sizes of connectors available, the For full information contact Kynmore Engineering designer can now concentrate on the circuit perfor­ Co. Ltd., 19 Buckingham Street, London W.C.2. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Aircraft Engineering and Aerospace Technology Emerald Publishing

Aviation Electronics

Aircraft Engineering and Aerospace Technology , Volume 43 (5): 1 – May 1, 1971

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Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0002-2667
DOI
10.1108/eb034773
Publisher site
See Article on Publisher Site

Abstract

May 1971 40 AIRCRAF T ENGINEERING Details of Electrical and Electronic Apparatus with Applications in the Maintenance and Operation of Aircraft, Missiles and Space Vehicles HERMETIC HIGH-ISOLATION MICROWAVE its high accuracy and low response to vibration and SWITCH noise. A miniature coaxial switch for use with Amphenol's Further information is available from Bell & Howell recently introduced SMA connectors, has been de­ Ltd., Electronics & Instruments Gp., Lennox Road, mance and then order a connector to suit. The op­ veloped by the company, based at Thanet Way, Basingstoke, Hants. tions available include single or double-sided contacts, Whitstable, Kent, to give complete hermetic protec­ high quality or commercial-grade gold-plated con­ tion in all environments. tacts, from 5 to 62 ways, end fixing feet, and solder or DIGITAL TIMING/COUNTING UNITS The new SPDT switches, part of Amphenol's wrap terminations in a number of styles. Crouzet Ltd., of Brentford, Mddx. have introduced expanded 303 series, provide 60 dB minimum cross­ Available as Series 562 (0·150 in.) and Series 5124 a high-quality flexible range of electronic digital talk at 18 GHz. VSWR at this frequency is less than (0·156 in.), modular connectors feature precision tachometers/counters/timers. The basic instrument 1-5:1 and insertion loss is only 0·5 dB maximum. The phosphor-bronze contacts and high quality diallyl is a 10 kHz electronic counter, with up to 10 Nixie new switches are ideally suited for applications where digital read-out tubes. Thumb-wheel switches can phthalate mouldings. The patented UECL contact a combination of maximum moisture resistance, be used to predetermine a count, and the instrument permits large areas of contact surface to mate with the minimum crosstalk interference and compact size is will then count either up or down, and give a relay prepared board contacts, providing even pressure, required. low wear rate, and optimum conductivity. or electronic output at the end of the count. The hermetic scaling offers complete contamina­ Further information may be obtained from Ultra Most types of transducer can be used directly tion protection within the switch under all environ­ Electronics (Components) Ltd., Fassetts Road, Loud- with these instruments without preamplifiers, and mental conditions as well as power handling capability water, Bucks. semiconductor inputs can be germanium, silicon or at any altitude equal to sea level rating - 50 watts photo-diode. CW. Special options offered on the tachometer version PRECISION MEASURING AMPLIFIER In conjunction with the firm's hardened beryllium include BCD output for a printer, no visual display, Bruel & Kjaer of Denmark who market their copper SMA connectors, giving superior performance input multiplier or divider, and a memorising display. equipment in the U.K. through B & K Laboratories over competitive stainless steel types, the new switches Digital programmer options include no visual dis- Ltd., have announced a new measuring amplifier. can handle 50 watts of r.f. with an operating time of display, fixed preselection, and up/down counting. Known as the 2607, it is a multi-purpose instrument 15 ms. Contact resistance is 60 milliohms. Excluding All models are available for 19 in. rack mounting, particularly designed for sound and vibration measure­ connectors the switch measures 0·50 in. deep by 1·34 or else in an enclosed case, whose dimensions all ments. in. wide by 1·16 in. high. round are slightly larger. The reek-mounted version The 2607 has interchangeable scales to allow direct Non-hermetically sealed high isolation microwave measures 19 in. × 12½ in. deep × 3 ½ in. high. reading of sound level, acceleration, velocity, dis­ switches capable of handling 60 watt through 12·4 Further information may be obtained from placement, power spectral density, etc. when used GHz are also available with Type N, TNC or BNC Crouzet Ltd., Thanet House, High Street, Brentford, with different transducers. Equipped with the B & K connectors. Standard versions measure 1 in. by Mddx. condenser microphones it fulfils and exceeds the 2·688 in. by 2·125 in., excluding connectors. IEC 179 specification for precision sound level Temperature range for all high isolation Amphenol A LOW COST COMPUTER FAMILY meters. A special feature of the 2607 over the 2606 microwave switches is minus 55 to plus 85 deg. C; Honeywell Information Systems Ltd. have launched released last year is a built-in lin-log converter and a altitude range is zero to 70,000 ft.; shock characteris­ in Great Britain a new family of four time-sharing rectifier allowing+peak, —peak and max. peak tics are per MIL-S-3928B - namely 15 g operating; computer systems. indication in addition to the r.m.s. Impulse, and vibration (also per MIL-S-3928B) is 10 g from 10 to Called the H1640 Series, the computers are aimed Impulse Hold indications.. The lin-log converter 2000 Hz. All switches can be provided with coil at the rapidly growing market for internal time-sharing gives a 50 dB display on the meter and 60 dB dynamic voltages of 6, 12, 26,48, 120 V d.c. and 115 V a.c. facilities, and offer research, educational and com­ range on the output. The peak indication makes the mercial organisations a 'two dimensional' computing amplifier ideal for measurements on impulsive signals. capability in a single system. Furthermore, the meter time constant is selectable SEMICONDUCTOR PRESSURE The H1640 family can be used as true time-sharing up to 300 sec allowing measurements on narrow bands TRANSDUCER computers to provide comprehensive problem- of noise. Bell & Howell's new typo 4-420 bonded semi­ solving facilities to a network of terminals. Alter­ Other features of the 2607 Measuring Amplifier conductor strain gauge pressure transducer is designed natively, they can be switched to local batch proces­ include Sensitivity 10 µV to 300 volts, built-in A, B, for applications requiring maximum performance sing for handling on-site tasks. C and D weighting networks, built-in power supply with regard to power, weight, reliability and accuracy. Complementing the company's time-sharing bur­ for condenser microphones, frequency range 2 Hz - Available in high and low pressure ranges, the eaux, which service over half of the British problem- 200 kHz and facilities for the connection of external transducer has an accuracy of plus or minus 0·15 solving terminal market, the H1640 Series incorpor­ filters. Further information may be obtained from per cent FRO or better, a high natural frequency of ates a simple but powerful time-sharing command C. E. Osmond, B & K Publicity Division, 59 Union greater than 75 kHz in the 0-5000 lb./sq. in. range, structure making it easy to learn for the 'first time' St., London, S.E.I. and a full range output of 250 mV d.c. plus or minus user, and yet offering the wide range of features 1 per cent at rated excitation. It is small enough to demanded by experienced users. This structure, which MINIATURE EXPLOSIVE ACTUATOR fit into most pressure measuring applications: length forms the basis for all four members of the H1640 The Atlas 1MT114 Miniature Piston Actuator, an 1·7 in., diameter 0·75 in. series, enables users, as their needs grow, to develop explosive-actuated device for producing linear and extend their time-sharing facilities with only the The transducer has a fully welded chamber for motion, has been introduced by Kynmore Engineering smallest additional investment. gauge or absolute measurements of fluids compatible Co. Ltd., London. with type 17-4 PH stainless steel. The high millivolt The low-cost H1642 can satisfy the needs of sub­ Compact in size, light in weight, and highly reliable output permits its use directly with conventional scribers sharing some 40 terminals, for whom a broad and rugged, the actuator is available with a variety measuring equipment without requiring costly range of languages, from Fortran to Teach, is in­ of squibs with different firing characteristics. Its peripheral amplification devices. stantly available to solve their problems. Also characteristics make it ideal for aerospace applications. Silicon strain sensing elements give the transducer available at the 'touch of a keyboard' would be more It can be used to lock a device and prevent rotary or than 200 ready-to-use scientific and commercial linear motion, release a device and hold it in place, applications programs, all of them tried and tested push mechanical loads, cut wires or cables, fire a on the larger H1648 time-sharing system. primer or stab detonator, indicate the presence of Major software innovations for the series include unwanted electrical pulses, operate switches or relays, the provision of Honeywell's DAP 16 assembly puncture a container, uncage a gyroscope, destruct language on all systems, and Cobol on all but the high-security equipment, or for many other applica­ H1642. tions. Minimum all-fire for a Type G squib, at minus INCREASED CONNECTOR PRODUCTION 65 deg. F and 10 milli-seconds function time can be Ultra Electronics (Components) Ltd., report that as low as 1·0 amp. A load of 20 lb. can be moved. increased demand for modular connectors in the Unfired body length of the 1MT114 is ·755 inch 0·150 in. and 0·156 in. pitch series can now be more maximum. Stroke is 5/16 in. Outside diameter is readily absorbed as a result of considerable invest­ ·133 in maximum. ment in new tools and presses. This unit is part of a range which also includes A characteristic of the modular connector is pyrotechnic table cutters, a comprehensive range of increased versatility, as any connector can be specified explosive-actuated single- and multiple switches by the equipment designer with a number of options. (some with time delay), and electrically operated Instead of tailoring circuits and circuit boards to fit matches. one of the many sizes of connectors available, the For full information contact Kynmore Engineering designer can now concentrate on the circuit perfor­ Co. Ltd., 19 Buckingham Street, London W.C.2.

Journal

Aircraft Engineering and Aerospace TechnologyEmerald Publishing

Published: May 1, 1971

There are no references for this article.