. Electronic apparatus for biological research. Electronic apparatus and appliances; Biology -- Research. THE POST OFFICE 3000 TYPE RELAY A relay set up to within ±10 per cent of the figures given below may have a life between adjustments of a million operations. Before attempting to adjust a relay, the coil retaining nut should be checked for tightness. The armature travel should then be adjusted to 0-030 in. by bending the armature suitably. A special tool is available for this purpose, but a light hammer, delicately used, is an acceptable substitute. For contact adjustment two special tools
. Electronic apparatus for biological research. Electronic apparatus and appliances; Biology -- Research. THE POST OFFICE 3000 TYPE RELAY A relay set up to within ±10 per cent of the figures given below may have a life between adjustments of a million operations. Before attempting to adjust a relay, the coil retaining nut should be checked for tightness. The armature travel should then be adjusted to 0-030 in. by bending the armature suitably. A special tool is available for this purpose, but a light hammer, delicately used, is an acceptable substitute. For contact adjustment two special tools are needed: (a) A spring balance to measure the force at the contact tip; if a proper relay balance is not available it is possible to use a piece of leaf spring suitably mounted with a. Position of special spring adjuster. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Donaldson, Peter Eden Kirwan. New York, Academic Press
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Keywords: ., bookcentury1900, bookcollectionameri, bookcollectionbiodiversity
