An apparatus for the precise conditioning of experimental animals with the aid of an equal to - or alternating-current pulse

摘要

1. It is an electronically controlled apparatus for the precise conditioning of experimental animals with the aid of a change - or equal to current pulse, in the case of a continuous checking of the resulting current intensity. Including the regulation of the current intensity and possibly an extension of the pulse.2.1. Currently known devices have in common that a small and not adjustable voltage is used (max. 230 V), in the case of possibly excessively high electrical resistance of the animal. Furthermore, in the case of movements of the animal the resulting current intensity and pulse duration is not known. Thus, no qualified statement about the actually administered current pulse and thus be made by means of the conditioning. It is an object of the invention, it is therefore a in narrow limits conditioned animal to produce.2.2. This device uses for the current pulse a high voltage source (1) of ~ 1 kv and of a microcontroller (5) by means of controlled resistor switching device (2), the current (type. 20 ua to 500 ua) regulates by the animal. The resulting voltage and current intensity, by means of an ad - transducer (3) is measured and if necessary readjusted. The preset pulse duration is measured (6) and possibly extended. Due to a preceding measurement of the resistance of the animal, the contact quality for the test grid (7) is determined.2.3. After completing the conditioning of the animal, the operator a qualified statement (4) via the current pulse which is passed by the animal and possibly occurring error.