Electrical treatment for general practice / by F. Stewart Povah & F. Davidson.

  • Povah, F. Stewart.
Date:
[1912?]
Catalogue details

Licence: In copyright

Credit: Electrical treatment for general practice / by F. Stewart Povah & F. Davidson. Source: Wellcome Collection.

    37/160 page 33
    CHAPTER VIII. SWITCH BOARDS WITH RHEOSTATS for use on the main house supply. For the various methods of Constant Current Application as enumerated on pages 21 to 23 for use with constant current batteries. There are many very useful designs of switch boards and switch tables for this purpose. The general construction is in most cases the same. The simple Switch-board illustrated, No. 201, is made up in the following manner. The board itself is of polished slate and mounted on this is a lamp bracket to take the guide lamp; plug socket for the entry of the wires leading from the house supply; switch for controlling the current; wire resistance or volt regu- lator; current reverser; galvanometer and terminals marked “ -f” and “—” for the electrode cables. To this may also be added a second lamp and sledge coil for faradisation. Fig. 13, illus- trates a switch-board for galvanisation (catephoresis, etc.), illumi- nation of surgical lamps of any voltage and cautery from an accumulator wired in conjunction with board. C
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