JPS54101740A - Slope-output controlling circuit for resistance welder - Google Patents
Slope-output controlling circuit for resistance welderInfo
- Publication number
- JPS54101740A JPS54101740A JP875778A JP875778A JPS54101740A JP S54101740 A JPS54101740 A JP S54101740A JP 875778 A JP875778 A JP 875778A JP 875778 A JP875778 A JP 875778A JP S54101740 A JPS54101740 A JP S54101740A
- Authority
- JP
- Japan
- Prior art keywords
- pulse
- signal
- circuit
- settling
- operational amplifier
- 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
Abstract
PURPOSE: To prevent the magnetic variation of the welding transformer for performing the good welding, by employing a specified stepped waveform synchronizing with the frequency of power source, for settling the firing angle of the switching element included in the welding-power-source- circuit.
CONSTITUTION: In the clock circuit of the block I, the diode 6 and the IC 7 prepare the clock pulse signal for every one cycle of the power source frequency; this clock pulse signal is inputted to the differentiation circuit (slope-timing-settling- circuit) constituted of the capacitors 8, 11, variable resistors 10, 12, etc., for preparing the differential pulse. The AND, of this differential pulse and the power- supply-timing-signal, is made by the gate circuits 15, 14, and is inputted to the analog switches 17, 18. In the firing-pulse-settling-circuit of the block II, the integrator, where the output signal of IC 33 is taken as the reset input signal and the output signal of the operational amplifier 21 is taken as the charge signal, is constituted of the operational amplifier 24, etc., and its output is transferred into the differential pulse by the comparator capacitor 40 including operational amplifier 39, diode 42, etc.; this differential pulse is amplified by the transistor 46, and the phase controlling pulse for the switching element is obtained through the pulse transformer 45.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP875778A JPS54101740A (en) | 1978-01-27 | 1978-01-27 | Slope-output controlling circuit for resistance welder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP875778A JPS54101740A (en) | 1978-01-27 | 1978-01-27 | Slope-output controlling circuit for resistance welder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54101740A true JPS54101740A (en) | 1979-08-10 |
| JPS573466B2 JPS573466B2 (en) | 1982-01-21 |
Family
ID=11701791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP875778A Granted JPS54101740A (en) | 1978-01-27 | 1978-01-27 | Slope-output controlling circuit for resistance welder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54101740A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0689116A (en) * | 1992-09-08 | 1994-03-29 | Sansha Electric Mfg Co Ltd | Soft starting method for power control |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH071117A (en) * | 1993-06-18 | 1995-01-06 | Nikko Denki Kk | Soldering iron |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4840180A (en) * | 1971-09-24 | 1973-06-13 |
-
1978
- 1978-01-27 JP JP875778A patent/JPS54101740A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4840180A (en) * | 1971-09-24 | 1973-06-13 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0689116A (en) * | 1992-09-08 | 1994-03-29 | Sansha Electric Mfg Co Ltd | Soft starting method for power control |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS573466B2 (en) | 1982-01-21 |
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