Circuit arrangement for a peak pressure measuring and warning unit

摘要

The invention relates to a circuit arrangement for a peak pressure measuring and warning unit which is intended for monitoring breathing during anaesthesia and therapy. It is the aim and the object of the invention to render possible continuous setting of limiting values independently of breathing rate, it being necessary to provide an additional logic connection in the signal line system for the duration of the setting of the limiting values. This logic connection is achieved with the inclusion of a known signal level changing circuit by means of the signal combination of two push-button switches with a negator, which is driven by the ventilator and whose output is interconnected with the inputs of integrated circuits.