JPS6157747U - - Google Patents

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Publication number
JPS6157747U
JPS6157747U JP14189684U JP14189684U JPS6157747U JP S6157747 U JPS6157747 U JP S6157747U JP 14189684 U JP14189684 U JP 14189684U JP 14189684 U JP14189684 U JP 14189684U JP S6157747 U JPS6157747 U JP S6157747U
Authority
JP
Japan
Prior art keywords
output signal
sawtooth wave
signal
providing
counter
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
Application number
JP14189684U
Other languages
Japanese (ja)
Other versions
JPH0342747Y2 (en
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 JP14189684U priority Critical patent/JPH0342747Y2/ja
Publication of JPS6157747U publication Critical patent/JPS6157747U/ja
Application granted granted Critical
Publication of JPH0342747Y2 publication Critical patent/JPH0342747Y2/ja
Expired legal-status Critical Current

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Description

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

第１図は本考案鋸歯状波発生回路の一実施例を
示す系統図、第２図は第１図例の説明に供する線
図、第３図は従来の鋸歯状波発生回路の例を示す
線図、第４図は第３図に示す例の説明に供する線
図である。 １０は位相比較器、１１は低域通過フイルタ、
１２は電圧制御形可変周波数発振器、１３は２進
カウンタ、１４はデイジタル−アナログ変換器で
ある。 Fig. 1 is a system diagram showing an embodiment of the sawtooth wave generating circuit of the present invention, Fig. 2 is a line diagram for explaining the example in Fig. 1, and Fig. 3 is an example of a conventional sawtooth wave generating circuit. Diagram, FIG. 4 is a diagram for explaining the example shown in FIG. 10 is a phase comparator, 11 is a low-pass filter,
12 is a voltage controlled variable frequency oscillator, 13 is a binary counter, and 14 is a digital-to-analog converter.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 位相比較器の一方の入力端子に同期信号を供給
し、該位相比較器の出力信号を低域通過フイルタ
に供給し、該低域通過フイルタの出力信号を電圧
制御形可変周波数発振器に供給し、該電圧制御形
可変周波数発振器の出力信号をカウンタに供給し
、該カウンタの出力信号からデイジタルーアナロ
グ変換器を介して鋸歯状波信号を得ると共に、上
記カウンタの最上位桁の出力信号を上記位相比較
器の他方の入力端に供給して、上記同期信号の周
波数の変化にかかわらず一定の振幅値の鋸歯状波
が得られるようにしたことを特徴とする鋸歯状波
発生回路。 providing a synchronization signal to one input terminal of a phase comparator, providing an output signal of the phase comparator to a low pass filter, and providing an output signal of the low pass filter to a voltage controlled variable frequency oscillator; The output signal of the voltage-controlled variable frequency oscillator is supplied to a counter, a sawtooth wave signal is obtained from the output signal of the counter via a digital-to-analog converter, and the output signal of the most significant digit of the counter is converted to the above-mentioned phase. A sawtooth wave generating circuit, characterized in that the sawtooth wave is supplied to the other input terminal of the comparator so that a sawtooth wave having a constant amplitude value can be obtained regardless of changes in the frequency of the synchronizing signal.
JP14189684U 1984-09-19 1984-09-19 Expired JPH0342747Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14189684U JPH0342747Y2 (en) 1984-09-19 1984-09-19

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14189684U JPH0342747Y2 (en) 1984-09-19 1984-09-19

Publications (2)

Publication Number Publication Date
JPS6157747U true JPS6157747U (en) 1986-04-18
JPH0342747Y2 JPH0342747Y2 (en) 1991-09-06

Family

ID=30700234

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14189684U Expired JPH0342747Y2 (en) 1984-09-19 1984-09-19

Country Status (1)

Country Link
JP (1) JPH0342747Y2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62142414A (en) * 1985-12-17 1987-06-25 Matsushita Electric Ind Co Ltd Saw-tooth wave voltage generating circuit
JPS6331274A (en) * 1986-07-24 1988-02-09 Sony Corp Deflection circuit for multiscan television receiver
JPS63219273A (en) * 1987-03-07 1988-09-12 Sony Corp Blanking circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62142414A (en) * 1985-12-17 1987-06-25 Matsushita Electric Ind Co Ltd Saw-tooth wave voltage generating circuit
JPS6331274A (en) * 1986-07-24 1988-02-09 Sony Corp Deflection circuit for multiscan television receiver
JPS63219273A (en) * 1987-03-07 1988-09-12 Sony Corp Blanking circuit

Also Published As

Publication number Publication date
JPH0342747Y2 (en) 1991-09-06

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