Two New Maintenance Instruments
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A Battery Trickle Charger and an Inexpensive and Easily Operated Electric Equipment Tester
RECENT additions to the range of electrical equipment _produced by the Runbaken Co., 280, Deansgatc, Manchester, 3, are the Overnight Trickle Charger, for charging up the starter battery, during. the night, from the mains, and the Dynometer, which enables dynamo, starter and wiring tests to be carried out by a man with only a small knowledge of electricity.
The former device•is designed to overcome the difficulty that arises through the heaviest loads being imposed upon the starter battery just when it is probably in-the least suitable state for withstanding the stress, namely, the starting Of a cold engine with an accumulator that has been standing uncharged After the day's. Work.
It is a compact instrument that steps down the mains supply to the required voltage, etc. Economical, durable and proof against misuse, the charger is available for 6-volt systems at £2 10s, and for 6-volt and 12-volt systems at £3 2S. 6d.
The second item of equipment—the Dynometer—costs £5 10s., and has a considerable number of applications. It incorporates an ammeter, a voltmeter, a milliamp. meter, a buzzer and lamp indicators. The meters have a common needle reading against a number of scales.
. Provision is made for testing polarity and the current consumption of the starter. Ten tests are described in the instruction book supplied with the in
strument. These cover dynamo voltage, output and polarity ; dynamo field-coils, armature windings and commutator; consumption of individual units ; faults in the wiring, including minute leakages; faults in the starter, and the condition of the accumulator.
The Runbaken Dynorneter is suitable for 6-volt and 12-volt systems, and for earth-return or double-pole circuits. Its simplicity of usage and low price should appeal strongly to transport engineers or owners of small fleets who have, hitherto, regarded electrical troubles as matters for the specialist repairer.
The device is substantially made, light, handy and quite easy to use. B29