This is achieved by discharging a capacitor into a sensitive reed relay to switch in the station battery (Fig. ... In complex schemes, where isolation is required between the auxiliary d.c. supply and the relay d.c. circuitry, a d.c./a.c./d.c. converteranbsp;...
|Author||:||Albert Russell van Cortlandt Warrington|
|Publisher||:||Halsted Press - 1977|