Abstract :
One of the terms of reference of the Medical Electronics Committee is to make recommendations on standards and specifications for medical electronic instruments where the medical requirement has been4 established and agreed. In all these cases it will be necessary, since the report is for engineers, to give the medical background briefly, supported by as much additional material in the way of references and bibliography as is available. This will enable the engineer who is particularly interested in this subject to extend his knowledge through the existing literature. It is proposed that a number of different instruments will be covered, the first of which will, be constant voltage electro-diagnostic stimulators. The Committee is indebted to the Editor of The British Medical Journal for permission to incorporate the electrical specification of a constant voltage electro-diagnostic stimulator which formed part of the report of a Medical Research Council sub-committee on nerve injuries.