JPS60184322U - variable impedance circuit - Google Patents
variable impedance circuitInfo
- Publication number
- JPS60184322U JPS60184322U JP7138284U JP7138284U JPS60184322U JP S60184322 U JPS60184322 U JP S60184322U JP 7138284 U JP7138284 U JP 7138284U JP 7138284 U JP7138284 U JP 7138284U JP S60184322 U JPS60184322 U JP S60184322U
- Authority
- JP
- Japan
- Prior art keywords
- variable impedance
- impedance circuit
- transistor
- resistor
- resistor connected
- 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
- Networks Using Active Elements (AREA)
- Control Of Amplification And Gain Control (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図は本考案の一実施例を示す回路図、第２図および
第３図は第１図の特性例図、第４図は第１図の使用例を
示す回路図、第５図〜第７図は第４図の動作説明図、第
８図および第９図は従来の回路側図、第１０図は第９図
の特性例図である。
Ｑ工・・・トランジスタ、Ｒ□ｖ Ｒ２・・・抵抗、Ｒ
３・・・定電圧源。
「□」−
［−−
↑゛ニ
ー ＶFig. 1 is a circuit diagram showing an embodiment of the present invention, Figs. 2 and 3 are characteristic examples of Fig. 1, Fig. 4 is a circuit diagram showing an example of use of Fig. 1, and Figs. 7 is an explanatory diagram of the operation of FIG. 4, FIGS. 8 and 9 are side views of conventional circuits, and FIG. 10 is a characteristic example diagram of FIG. 9. Q engineering...Transistor, R□v R2...Resistor, R
3... Constant voltage source. “□”− [−− ↑゛nee V
Claims (1)
れた第１の抵抗と、トランジスタのコレクタとエミッタ
との間に並列接続された第２の抵抗と、トランジスタの
ベースと第１の抵抗との間゛ に並列接続された定電
圧源とで構成されたことを特徴とする可変インピーダン
ス回路。a transistor, a first resistor connected in series to the emitter of the transistor, a second resistor connected in parallel between the collector and emitter of the transistor, and a resistor connected in parallel between the base of the transistor and the first resistor. A variable impedance circuit comprising a constant voltage source connected to the variable impedance circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7138284U JPS60184322U (en) | 1984-05-16 | 1984-05-16 | variable impedance circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7138284U JPS60184322U (en) | 1984-05-16 | 1984-05-16 | variable impedance circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60184322U true JPS60184322U (en) | 1985-12-06 |
Family
ID=30608828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7138284U Pending JPS60184322U (en) | 1984-05-16 | 1984-05-16 | variable impedance circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60184322U (en) |
-
1984
- 1984-05-16 JP JP7138284U patent/JPS60184322U/en active Pending
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