JPS5972893U - oscillation circuit - Google Patents
oscillation circuitInfo
- Publication number
- JPS5972893U JPS5972893U JP1983088426U JP8842683U JPS5972893U JP S5972893 U JPS5972893 U JP S5972893U JP 1983088426 U JP1983088426 U JP 1983088426U JP 8842683 U JP8842683 U JP 8842683U JP S5972893 U JPS5972893 U JP S5972893U
- Authority
- JP
- Japan
- Prior art keywords
- differential amplifier
- oscillation circuit
- current
- voltage
- current source
- 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
- Control Of Motors That Do Not Use Commutators (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は一般的なモーター駆動回路の一例を示す回路図
、第２図は従来方式及び本考案における波形図、第３図
は本考案を説明するためのブロック図、第４図は本考案
の一実施例を示す発振回路図である。
１・・・発振回路、２． ６． ６’、 ６″、３５
゜３４．４０・・・コンデンサ、７・・・増幅器、５１
５’ １５″・・・ダイオード、３． ４． ４’、
４″・・・位置検出トランス、８．８’、８″・・
・励磁巻線、３１゜３２．３７．３９・・・トランジス
タ、３６・・・位置検出トランス１次側巻線、４１・・
・比較増幅器、４２・・・基準電圧源。Figure 1 is a circuit diagram showing an example of a general motor drive circuit, Figure 2 is a waveform diagram in the conventional method and the present invention, Figure 3 is a block diagram for explaining the present invention, and Figure 4 is the present invention. FIG. 2 is an oscillation circuit diagram showing one embodiment of the present invention. 1... oscillation circuit, 2. 6. 6', 6'', 35
゜34.40...Capacitor, 7...Amplifier, 51
5'15''...Diode, 3. 4. 4',
4″...Position detection transformer, 8.8', 8″...
・Excitation winding, 31° 32.37.39...Transistor, 36...Position detection transformer primary winding, 41...
- Comparison amplifier, 42... reference voltage source.
Claims (1)
および前記差動増幅器の入出力間に設けられた正帰還回
路を有する発振部と、該発振部の出力信号の振幅に応じ
た電圧を得る手段と、該電圧を基準電圧と比較して前記
電流源の電流を制御する比較器とを備えることを特徴と
する発振回路。a differential amplifier, a current source that supplies an operating current to the differential amplifier, an oscillation section having a positive feedback circuit provided between the input and output of the differential amplifier, and a voltage according to the amplitude of an output signal of the oscillation section. and a comparator for comparing the voltage with a reference voltage to control the current of the current source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1983088426U JPS5972893U (en) | 1983-06-09 | 1983-06-09 | oscillation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1983088426U JPS5972893U (en) | 1983-06-09 | 1983-06-09 | oscillation circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5972893U true JPS5972893U (en) | 1984-05-17 |
Family
ID=30218337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1983088426U Pending JPS5972893U (en) | 1983-06-09 | 1983-06-09 | oscillation circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5972893U (en) |
-
1983
- 1983-06-09 JP JP1983088426U patent/JPS5972893U/en active Pending
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