Device for generating high-frequency mechanical vibrations for a dental handpiece
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United States of America Patent
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Apr 8, 2003
Grant Date -
N/A
app pub date -
Apr 11, 2000
filing date -
Apr 11, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A device for generating high-frequency mechanical vibrations for dental purposes comprises a current detector (50) fitted in the supply line of a vibration generator (12). The output signal of the current detector (50) is transmitted to one of the inputs of a control circuit (74), which at its other input receives a supply current nominal value signal. The output of the control circuit (74) is connected to the control terminal of a controllable oscillator (42), which together with a power stage (46 to 48) prepares the supply current for the vibration generator (12). In this manner, a constant output amplitude of the vibration generator is obtained independent of the load coupled to said vibration generator at any given time.
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