JPS55100875A - Charging circuit of stud welding machine - Google Patents
Charging circuit of stud welding machineInfo
- Publication number
- JPS55100875A JPS55100875A JP892279A JP892279A JPS55100875A JP S55100875 A JPS55100875 A JP S55100875A JP 892279 A JP892279 A JP 892279A JP 892279 A JP892279 A JP 892279A JP S55100875 A JPS55100875 A JP S55100875A
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- voltage
- comparator
- goes
- charging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Arc Welding Control (AREA)
Abstract
PURPOSE: To stabilize charging amount to a capacitor constant and make the circuit simple by constantly inputting the charging voltage of the capacitor to a comparator and letting the comparator turn OFF a switching element when the capacitor voltage reaches the desired value.
CONSTITUTION: As a capacitor C3 is charged, the voltage being inputted to the input I2 of a comparator Q1 via voltage dividing resistor groups R5, R6, R7 becomes gradually higher. When this voltage becomes equal to the voltage inputted to the input I1 of the comparator Q1, the comparator Q1 goes OFF and the transistor Q2 goes OFF, causing a light emitting diode Q4 to go OFF and stopping charging to the capacitor C3. Next, when the electric energy of the capacitor C3 turns ON the trigger switch R2 of the welding machine to let the welding machine operate, then the comparator Q1 again goes ON and current is supplied to a rectifier D4, by which charging to the capacitor C3 is started. When the voltage of the capacitor C3 reaches the specified value, a thyristor Q4 goes OFF to stop the current to the capacitor C3.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP892279A JPS55100875A (en) | 1979-01-29 | 1979-01-29 | Charging circuit of stud welding machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP892279A JPS55100875A (en) | 1979-01-29 | 1979-01-29 | Charging circuit of stud welding machine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55100875A true JPS55100875A (en) | 1980-08-01 |
Family
ID=11706139
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP892279A Pending JPS55100875A (en) | 1979-01-29 | 1979-01-29 | Charging circuit of stud welding machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55100875A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4464556A (en) * | 1983-06-27 | 1984-08-07 | Rca Corporation | System and method of accurately controlling the electrode voltage of a welding device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53119253A (en) * | 1977-03-29 | 1978-10-18 | Stanley Electric Co Ltd | Voltage reducing apparatus for stud welder |
-
1979
- 1979-01-29 JP JP892279A patent/JPS55100875A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53119253A (en) * | 1977-03-29 | 1978-10-18 | Stanley Electric Co Ltd | Voltage reducing apparatus for stud welder |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4464556A (en) * | 1983-06-27 | 1984-08-07 | Rca Corporation | System and method of accurately controlling the electrode voltage of a welding device |
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