JPS5570486A - Resistance welding current monitor device - Google Patents
Resistance welding current monitor deviceInfo
- Publication number
- JPS5570486A JPS5570486A JP14483578A JP14483578A JPS5570486A JP S5570486 A JPS5570486 A JP S5570486A JP 14483578 A JP14483578 A JP 14483578A JP 14483578 A JP14483578 A JP 14483578A JP S5570486 A JPS5570486 A JP S5570486A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output
- switch
- resistance welding
- welding current
- 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.)
- Granted
Links
Landscapes
- Arc Welding Control (AREA)
Abstract
PURPOSE: To easily enhance the precision of monitoring of resistance welding current, by providing a switch circuit between the troidal coil output and comparator so as to completely eliminate trouble due to rush current when starting power supply.
CONSTITUTION: A resistance welding current is detected by a troidal coil 3, and is inputted into a waveform restoring circuit 4. A switch circuit 9 composed of analog switch IC3 being controlled by a switch control circuit 10 is provided between an effective value-DC voltage converting circuit 5 and a comparator circuit 6. It is constituted so that the switch circuit 9 may be open only when the output of the switch circuit 10 is at high level. Therefore, judgment of comparison is not made while the output of the switch control circuit 10 remains at high level after start of power supply. When the output drops to low level, the output of the comparator circuit 6 is obtained. Hence, entry of factors disturbing the measurement of rush current or the like may be prevented, so that high precision judgement may be achieved easily.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14483578A JPS5570486A (en) | 1978-11-22 | 1978-11-22 | Resistance welding current monitor device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14483578A JPS5570486A (en) | 1978-11-22 | 1978-11-22 | Resistance welding current monitor device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5570486A true JPS5570486A (en) | 1980-05-27 |
| JPS6249151B2 JPS6249151B2 (en) | 1987-10-17 |
Family
ID=15371535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14483578A Granted JPS5570486A (en) | 1978-11-22 | 1978-11-22 | Resistance welding current monitor device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5570486A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6296866A (en) * | 1985-08-06 | 1987-05-06 | ダイナミック システムズ インコーポレーテッド | Method and device for measuring current effective value |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS455620Y1 (en) * | 1967-04-24 | 1970-03-18 | ||
| JPS49113743A (en) * | 1973-03-01 | 1974-10-30 | ||
| JPS5216054A (en) * | 1975-07-28 | 1977-02-07 | Sumitomo Kensetsu Kk | Mixing device |
-
1978
- 1978-11-22 JP JP14483578A patent/JPS5570486A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS455620Y1 (en) * | 1967-04-24 | 1970-03-18 | ||
| JPS49113743A (en) * | 1973-03-01 | 1974-10-30 | ||
| JPS5216054A (en) * | 1975-07-28 | 1977-02-07 | Sumitomo Kensetsu Kk | Mixing device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6296866A (en) * | 1985-08-06 | 1987-05-06 | ダイナミック システムズ インコーポレーテッド | Method and device for measuring current effective value |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6249151B2 (en) | 1987-10-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5463662A (en) | Current supply circuit | |
| JPS56121363A (en) | Gate circuit for thyristor | |
| JPS5570486A (en) | Resistance welding current monitor device | |
| JPS5517280A (en) | Excitation circuit for synchronous generator | |
| JPS5317732A (en) | Method and device for charging by corona discharge | |
| JPS5636046A (en) | Detecting device for relative humidity | |
| JPS5290046A (en) | Voltage monitor circuit | |
| JPS5526032A (en) | Power supply device | |
| JPS5518731A (en) | Generating circuit for initial reset signal | |
| JPS5398050A (en) | Power supply | |
| JPS5479442A (en) | Starting system of static type reactive power regulating device | |
| JPS5644866A (en) | Measurement of breakdown strength of latch circuit | |
| JPS5416345A (en) | Automatic welding method for holding constant arc length | |
| JPS54142989A (en) | Automatic aging unit | |
| JPS5395251A (en) | Dc stabilized power supply | |
| JPS57199325A (en) | Time limit circuit | |
| JPS5479843A (en) | Safety device for electric heater | |
| JPS57162362A (en) | Measuring method for latchup withstand amount of complementary mos integrated circuit device | |
| JPS5790723A (en) | Power supply device | |
| JPS52101421A (en) | Square wave power supply | |
| JPS53147954A (en) | Power consumption controller | |
| JPS5529722A (en) | Current measuring unit | |
| JPS5484225A (en) | Switching power source circuit | |
| JPS5471318A (en) | Motor brake power supply | |
| JPS6484764A (en) | Gas laser device |