JPH0415197U - - Google Patents
Info
- Publication number
- JPH0415197U JPH0415197U JP5586590U JP5586590U JPH0415197U JP H0415197 U JPH0415197 U JP H0415197U JP 5586590 U JP5586590 U JP 5586590U JP 5586590 U JP5586590 U JP 5586590U JP H0415197 U JPH0415197 U JP H0415197U
- Authority
- JP
- Japan
- Prior art keywords
- polarity
- polarity switching
- switching signal
- output
- failure detection
- 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
- 238000001514 detection method Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 1
Description
第１図は本考案の実施例を示す回路図、第２図
は従来の誘導加熱用インバータ電源を示す回路図
、第３図は上記従来例における電圧制御タイマの
具体的回路図、第４図ａおよびｂは上記電圧制御
タイマのタイマ時間とインバータ出力との関係を
示す図、第５図ａとｂはそれぞれ負荷のＱが高い
場合と低い場合のインバータ起動時の負荷電流を
示す図、第６図はＱが低い負荷の例を示す縦断面
図である。
１……インバータ、３……整合トランス、４…
…共振コンデンサ、５……負荷、１１……電圧制
御タイマ、１５……極性検知器、１７……ＪＫフ
リツプフロツプ、２０……極性検知失敗検出部、
２７……比較器、２８……Ｄフリツプフロツプ、
３２，３３……ワツシヨツトマルチ、３８……極
性強制切換部。
Fig. 1 is a circuit diagram showing an embodiment of the present invention, Fig. 2 is a circuit diagram showing a conventional inverter power supply for induction heating, Fig. 3 is a specific circuit diagram of the voltage control timer in the above conventional example, and Fig. 4 Figures a and b are diagrams showing the relationship between the timer time of the voltage control timer and the inverter output, Figures a and b are diagrams showing the load current at the time of inverter startup when the Q of the load is high and low, respectively. FIG. 6 is a longitudinal sectional view showing an example of a load with a low Q. 1... Inverter, 3... Matching transformer, 4...
... Resonance capacitor, 5 ... Load, 11 ... Voltage control timer, 15 ... Polarity detector, 17 ... JK flip-flop, 20 ... Polarity detection failure detection unit,
27... Comparator, 28... D flip-flop,
32, 33...Wash shot multi, 38...Polarity forced switching section.
Claims (1)
する極性切換手段を有し、この極性切換信号に同
期してインバータ出力の極性切換を行う誘導加熱
用インバータ電源において、 上記極性切換信号が所定時間経過後も切換わら
ない場合に出力する極性検知失敗検出部、上記極
性検知失敗検出部の出力を受けて上記極性切換手
段の上記極性切換信号を強制的に切り換わらせる
極性強制切換部を有することを特徴とする誘導加
熱用インバータ電源。[Claims for Utility Model Registration] In an inverter power supply for induction heating that has a polarity switching means that detects the polarity of a load current and generates a polarity switching signal, and switches the polarity of an inverter output in synchronization with this polarity switching signal. , a polarity detection failure detection section that outputs an output when the polarity switching signal does not switch after a predetermined period of time; and a polarity detection failure detection section that forcibly switches the polarity switching signal of the polarity switching means in response to the output of the polarity detection failure detection section. An inverter power source for induction heating, characterized by having a forced polarity switching section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5586590U JP2510172Y2 (en) | 1990-05-28 | 1990-05-28 | Inverter power supply for induction heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5586590U JP2510172Y2 (en) | 1990-05-28 | 1990-05-28 | Inverter power supply for induction heating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0415197U true JPH0415197U (en) | 1992-02-06 |
| JP2510172Y2 JP2510172Y2 (en) | 1996-09-11 |
Family
ID=31579196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5586590U Expired - Lifetime JP2510172Y2 (en) | 1990-05-28 | 1990-05-28 | Inverter power supply for induction heating |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2510172Y2 (en) |
-
1990
- 1990-05-28 JP JP5586590U patent/JP2510172Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2510172Y2 (en) | 1996-09-11 |