Resistance welding power supply apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Dec 6, 2001
app pub date -
May 24, 2001
filing date -
May 26, 2000
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A capacitor has a positive electrode that is electrically connected to a welding electrode on one hand by way of a switching transistor for the supply of welding current and has a negative electrode that is electrically connected to a welding electrode on the other. The capacitor is charged by a charging circuit. A charging control unit accepts as a charging voltage monitor signal an output signal of a comparator and provides a control of the charging circuit so as to allow a capacitor voltage fed to one input terminal of the comparator to conform to a set voltage fed by a main control unit. This power supply apparatus includes two designation modes, i.e., a direct designation mode in which the user directly designates a desired capacitor voltage, and an indirect designation mode in which the user designates a standard current value as a provisional standard for a welding current so that the apparatus can automatically set a capacitor voltage corresponding to the standard current value designated.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully