REFERENCES 



In Figure 34.31a, closing of key L makes the uniselector 'home' to a 

 defined position (usually contact 1). Figure 34.31b shows a circuit whereby 

 the uniselector drives to any 'marked' position and then stops. When it is 

 desired to 'count-down' by a number other than 25 a circuit similar to 

 Figure 34.31c may be used. 



REFERENCES 



^ Atkinson, J. Telephony, Chap. VI. Pitman. 1948 



2 Barnes, R. C. M. Electron. Engng. 26 (1954) 432, 493 



38 



533 



