Vorrichtung zum Schweissen medizinischer Kunststoffgegenstände

摘要

The detuning of a tuned network in a sealing head (10) of a device for sealing medical plastic articles (30) is detected and automatically compensated to reduce the overall energy consumption and optimize the sealing process. A secondary capacitor (C2) in the tuned network is a variable capacitor controlled by a motor (M) operated by a phase detector (40) to counteract the detuning.