JPH0433295U - - Google Patents
Info
- Publication number
- JPH0433295U JPH0433295U JP7398690U JP7398690U JPH0433295U JP H0433295 U JPH0433295 U JP H0433295U JP 7398690 U JP7398690 U JP 7398690U JP 7398690 U JP7398690 U JP 7398690U JP H0433295 U JPH0433295 U JP H0433295U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- inverter circuit
- power
- heating coil
- controls
- 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
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000010411 cooking Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 5
- 230000010355 oscillation Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
Description
第１図は本考案の一実施例を示す電磁調理器の
要部ブロツク回路図、第２図ａ，ｂは同インバー
タ回路の各部波形図、第３図は同トリガ発生回路
の回路例、第４図は同トリガ発生回路の入出力波
形図、第５図は同鋸波出力回路例ａ及び従来例を
示す自励発振回路例ｂ、第６図は本考案の鋸波出
力回路例及び従来例の自励発振回路の出力波形図
例であり、ａは通常時、ｂは異常時を示す。第７
図は従来例を示す電磁調理器の要部ブロツク回路
図である。
１……整流回路、２……インバータ回路、３…
…ドライブ回路、４……トリガ発生回路、５……
鋸波発生回路、２１……加熱コイル、２４……ス
イツチング素子。
Figure 1 is a block circuit diagram of the main parts of an electromagnetic cooker showing an embodiment of the present invention, Figures 2a and b are waveform diagrams of various parts of the inverter circuit, and Figure 3 is a circuit example of the trigger generation circuit. Fig. 4 is an input/output waveform diagram of the same trigger generation circuit, Fig. 5 is an example of the sawtooth wave output circuit a and a self-excited oscillation circuit b showing a conventional example, and Fig. 6 is an example of the sawtooth wave output circuit of the present invention and a conventional example. This is an example of an output waveform diagram of an example self-excited oscillation circuit, where a indicates a normal state and b indicates an abnormal state. 7th
The figure is a block circuit diagram of essential parts of a conventional electromagnetic cooker. 1... Rectifier circuit, 2... Inverter circuit, 3...
...Drive circuit, 4...Trigger generation circuit, 5...
sawtooth wave generation circuit, 21... heating coil, 24... switching element.
Claims (1)
この直流電源の供給を受ける加熱コイルを含む電
圧共振形インバータ回路と、このインバータ回路
を制御する制御回路とを有し、前記加熱コイルに
発生する磁界により被加熱物に発生する渦電流に
よつて加熱調理する電磁調理器において、前記イ
ンバータ回路２を制御する制御回路内にトリガ発
生回路４に接続された鋸波発生回路５を設け、加
熱コイル２１の両端の電圧を比較してタイミング
パルスを発生し、前記タイミングパルス１個に対
してインバータ回路２のスイツチング素子２４用
ドライブパルスを１個だけ発生させるものとした
ことを特徴とする電磁調理器。 A rectifier circuit that converts AC power to DC power,
It has a voltage resonant inverter circuit including a heating coil supplied with this DC power, and a control circuit that controls this inverter circuit. In an electromagnetic cooker for cooking, a sawtooth wave generation circuit 5 connected to a trigger generation circuit 4 is provided in the control circuit that controls the inverter circuit 2, and a timing pulse is generated by comparing the voltages at both ends of the heating coil 21. An electromagnetic cooking device characterized in that only one drive pulse for the switching element 24 of the inverter circuit 2 is generated for each timing pulse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7398690U JPH0433295U (en) | 1990-07-12 | 1990-07-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7398690U JPH0433295U (en) | 1990-07-12 | 1990-07-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0433295U true JPH0433295U (en) | 1992-03-18 |
Family
ID=31613283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7398690U Pending JPH0433295U (en) | 1990-07-12 | 1990-07-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0433295U (en) |
-
1990
- 1990-07-12 JP JP7398690U patent/JPH0433295U/ja active Pending
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