JPS6188320U - - Google Patents

Info

Publication number
JPS6188320U
JPS6188320U JP1984174518U JP17451884U JPS6188320U JP S6188320 U JPS6188320 U JP S6188320U JP 1984174518 U JP1984174518 U JP 1984174518U JP 17451884 U JP17451884 U JP 17451884U JP S6188320 U JPS6188320 U JP S6188320U
Authority
JP
Japan
Prior art keywords
transistor
oscillation
feedback circuit
feedback
collector
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
Application number
JP1984174518U
Other languages
Japanese (ja)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1984174518U priority Critical patent/JPS6188320U/ja
Publication of JPS6188320U publication Critical patent/JPS6188320U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Mobile Radio Communication Systems (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の周波数可変発振回路図、第２
図は本考案の周波数可変発振回路を用いた無線電
話機のブロツク図である。 ７…帰還回路、８…付加抵抗、９…第１トラン
ジスタ、１０…第２トランジスタ、１５…電源ス
イツチ。 Figure 1 is a frequency variable oscillation circuit diagram of the present invention, Figure 2
The figure is a block diagram of a wireless telephone using the variable frequency oscillation circuit of the present invention. 7... Feedback circuit, 8... Additional resistor, 9... First transistor, 10... Second transistor, 15... Power switch.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] トランジスタのベースとコレクタ間にコンデン
サーと抵抗とよりなる帰還回路を接続し、前記コ
レクタの信号をベースに正帰還して発振させるも
のにおいて、前記帰還回路に付加抵抗又は付加コ
ンデンサーと第１トランジスタとを接続し、該第
１トランジスタを電源投入時に時定数回路に充電
されるまでの間正常時と異なる動作する第２トラ
ンジスタにて制御し、前記帰還回路の帰還定数を
電源投入直後と正常時とでは異ならしめ、発振周
波数を変化させることを特徴とする周波数可変発
振回路。 A feedback circuit including a capacitor and a resistor is connected between the base and collector of the transistor, and a signal from the collector is positively fed back to the base for oscillation, and the feedback circuit includes an additional resistor or an additional capacitor and a first transistor. The first transistor is controlled by a second transistor that operates differently from the normal operation until the time constant circuit is charged when the power is turned on, and the feedback constant of the feedback circuit is changed between immediately after the power is turned on and during normal operation. A variable frequency oscillation circuit characterized by changing the oscillation frequency.
JP1984174518U 1984-11-16 1984-11-16 Pending JPS6188320U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1984174518U JPS6188320U (en) 1984-11-16 1984-11-16

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1984174518U JPS6188320U (en) 1984-11-16 1984-11-16

Publications (1)

Publication Number Publication Date
JPS6188320U true JPS6188320U (en) 1986-06-09

Family

ID=30732135

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1984174518U Pending JPS6188320U (en) 1984-11-16 1984-11-16

Country Status (1)

Country Link
JP (1) JPS6188320U (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS494558B1 (en) * 1970-11-18 1974-02-01
JPS5318135A (en) * 1976-08-02 1978-02-20 Komatsu Ltd Steering controller for vehicle with wheel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS494558B1 (en) * 1970-11-18 1974-02-01
JPS5318135A (en) * 1976-08-02 1978-02-20 Komatsu Ltd Steering controller for vehicle with wheel

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