JPS63106289U - - Google Patents
Info
- Publication number
- JPS63106289U JPS63106289U JP19832686U JP19832686U JPS63106289U JP S63106289 U JPS63106289 U JP S63106289U JP 19832686 U JP19832686 U JP 19832686U JP 19832686 U JP19832686 U JP 19832686U JP S63106289 U JPS63106289 U JP S63106289U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- external connection
- connection terminal
- test
- measured
- 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
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Landscapes
- Tests Of Electronic Circuits (AREA)
- Testing Or Measuring Of Semiconductors Or The Like (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
- Logic Circuits (AREA)
Description
第１図はこの考案に係る信号切換回路の一実施
例を示すブロツク構成図、第２図は同実施例を具
体的にして示す回路構成図、第３図及び第４図は
それぞれ同実施例に示す各部の電位関係を示す図
、第５図は従来の信号切換回路を示すブロツク構
成図である。
１１……信号源、１２……クロマ増幅回路、１
３……バースト・クロマ増幅回路、１４……検波
回路、１５……集積回路、１６〜２０……外部接
続用端子、２１……集積回路、２２……外部接続
用端子、２３……制御回路、２４……電源端子、
２５……信号源、２６……可変抵抗器、２７……
スイツチ、２８……電源端子、２９……信号源、
３０……出力端子。
FIG. 1 is a block configuration diagram showing an embodiment of the signal switching circuit according to this invention, FIG. 2 is a circuit configuration diagram specifically showing the same embodiment, and FIGS. 3 and 4 are respectively the same embodiment. FIG. 5 is a block diagram showing a conventional signal switching circuit. 11... Signal source, 12... Chroma amplifier circuit, 1
3...Burst chroma amplification circuit, 14...Detection circuit, 15...Integrated circuit, 16-20...Terminal for external connection, 21...Integrated circuit, 22...Terminal for external connection, 23...Control circuit , 24...power terminal,
25... Signal source, 26... Variable resistor, 27...
Switch, 28...Power terminal, 29...Signal source,
30...Output terminal.
Claims (1)
さに応じて、通常動作時に必要とされる所定の制
御信号を生成する制御信号生成手段と、前記外部
接続用端子に印加される調整用電圧がエミツタに
供給されベースにテスト時に必要とする被測定用
信号が供給されるトランジスタと、前記テスト時
に前記外部接続用端子に前記トランジスタを導通
せしめるレベルの電圧を印加する手段とを備え、
テスト時に前記外部接続用端子から前記被測定用
信号を得るように構成してなることを特徴とする
信号切換回路。 control signal generation means for generating a predetermined control signal required during normal operation according to the magnitude of the adjustment voltage applied to the external connection terminal; and an adjustment voltage applied to the external connection terminal. a transistor whose emitter is supplied with a signal to be measured necessary for testing and whose base is supplied with a signal to be measured required during a test, and means for applying a voltage to the external connection terminal at a level that makes the transistor conductive during the test,
A signal switching circuit characterized in that the signal switching circuit is configured to obtain the signal to be measured from the external connection terminal during a test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19832686U JPS63106289U (en) | 1986-12-25 | 1986-12-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19832686U JPS63106289U (en) | 1986-12-25 | 1986-12-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63106289U true JPS63106289U (en) | 1988-07-09 |
Family
ID=31158909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19832686U Pending JPS63106289U (en) | 1986-12-25 | 1986-12-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63106289U (en) |
-
1986
- 1986-12-25 JP JP19832686U patent/JPS63106289U/ja active Pending
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