Aviation Electronics

Abstract

Details of Electrical and Electronic Apparatus with Applications in the Maintenance and Operation of Aircraft, Missiles and Space Vehicles. A new medium‐tolerance time delay has been introduced by M. L. Aviation Co. Ltd. for use over a temperature range of minus 65 to plus 70 deg. C. The initial range will cover input supplies of 18 V d.c. to 29 V d.c. with a current rating of 3 amps. The units incorporate a semi‐conductor circuit which operates an electro‐mechanical switching relay, all housed within a hermetically‐scaled container. Power consumption, with the relay energized, is 7 watts and the unit automatically rescts when the supply voltage is broken. Maximum pulse frequency is dependent on the ambient conditions; 1 –5 sec. on and 10 m./scc. off at minus 65 deg. C, and 1–15 sec. on and 10 m./sec. ofT at plus 70 deg. C. for a 29 V d.c. unit. Alternative types are also offered for a.c. operation up to 50 V r.m.s. and delays of up to 10 sec. All delays can be supplied fully tested to climatic and vibration specifications D.T.D.1085B and Av.P.24 (Engine Bay) for aircraft use.

Citation

(1963), "Aviation Electronics", Aircraft Engineering and Aerospace Technology, Vol. 35 No. 12, pp. 376-376. https://doi.org/10.1108/eb033817