The arrangement on the " open-circuit " system for single-current working is shown in fig.
It will be observed that the circuit is not in this case actually open; the meaning of the expression " open circuit " is " no battery to line."
It differs from the open circuit in only requiring one battery (although, as in the figure, half of it is often placed at each end), in having the re circuit ceiving instrument between the line and the key, and in having the battery continuously to the line.
When signals are to be sent from either station the operator turns the switch c out of contact with the stop b, and then operates precisely as in open circuit send '" i ing.
D and spark gap, has the same natural time period of oscillation as the open circuit consisting of the antenna, secondary coil and adjustable inductance.
Instruments for doing this are called wave meters and are of two kinds, open circuit and closed circuit.
due to the Thomson effect of about 10 microvolts per degree tending to drive positive electricity from hot to cold, and raising the cold end of the iron 989 microvolts in potential above the hot end on open circuit.
Merlins have good club sailing countrywide plus Britain's most enjoyable, varied and competitive Open Circuit.
Instruction by a rebreather diver of trainee's on open circuit SCUBA is not covered under SAA Insurance.
Stubs are shorted or open circuit lengths of transmission line which produce a pure reactance at the attachment point.
This system is more expen sive than the open-circuit system, ®' as the battery is always at work; but it offers some advantages on circuits where there are a number 'a' N% b '.a of intermediate stations, as the Ã‚° Ã‚° circuit is under a constant electro motive force and has the same resistance no matter which station is sending or receiving.
Forms of open circuit wave meter have been devised by Slaby and by Fleming.
The word usage examples above have been gathered from various sources to reflect current and historial usage. They do not represent the opinions of YourDictionary.com.