Desoldering method and apparatus with minimum vacuum on-time control
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United States of America Patent
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Dec 3, 1996
Issued Date -
N/A
app pub date -
Jun 30, 1995
filing date -
Jun 30, 1995
priority date (Note) -
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status (Latency Note)
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Abstract
A control circuit for a vacuum desoldering apparatus includes a timing mechanism to ensure that vacuum is maintained for a necessary minimum amount of time, even if a vacuum actuation switch of the desoldering tool is prematurely deactivated by the operator. If the operator presses the vacuum actuator switch for a period of time longer than the predetermined minimum time, vacuum will flow until the switch is released. However, if the operator actuates the switch very briefly, that is, for less than the predetermined minimum vacuum actuation time, the vacuum supply is maintained in an activated state for the predetermined minimum time.
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