JPH0235074U - - Google Patents
Info
- Publication number
- JPH0235074U JPH0235074U JP11453988U JP11453988U JPH0235074U JP H0235074 U JPH0235074 U JP H0235074U JP 11453988 U JP11453988 U JP 11453988U JP 11453988 U JP11453988 U JP 11453988U JP H0235074 U JPH0235074 U JP H0235074U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- voltage
- cmos logic
- logic
- supply terminal
- 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
Links
- 230000000295 complement effect Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 claims 1
- 229910044991 metal oxide Inorganic materials 0.000 claims 1
- 150000004706 metal oxides Chemical class 0.000 claims 1
- 239000004065 semiconductor Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Measuring Frequencies, Analyzing Spectra (AREA)
Description
第１図は本考案に係る周波数測定装置の一実施
例を示す図、第２図はＣＭＯＳロジツクＩＣの等
価回路を示す図、第３図は第２図回路のタイムチ
ヤート、第４図はＣＭＯＳロジツクＩＣの入力周
波数と動作消費電流の関係を示す図である。
１……ＣＭＯＳロジツクＩＣ、２……ボルテー
ジホロワ回路、３……ツエナーダイオード、４…
…差動増幅器。
Fig. 1 is a diagram showing an embodiment of the frequency measuring device according to the present invention, Fig. 2 is a diagram showing an equivalent circuit of a CMOS logic IC, Fig. 3 is a time chart of the circuit shown in Fig. 2, and Fig. 4 is a diagram showing a CMOS logic IC. 3 is a diagram showing the relationship between input frequency and operating current consumption of a logic IC. FIG. 1... CMOS logic IC, 2... Voltage follower circuit, 3... Zener diode, 4...
...Differential amplifier.
Claims (1)
ＩＣ（Ｃｏｍｐｌｅｍｅｎｔａｒｙ Ｍｅｔａｌ
Ｏｘｉｄｅ Ｓｅｍｉｃｏｎｄｕｃｔｏｒ ロ
ジツクＩＣ）と、 ＣＭＯＳロジツクＩＣの２つの電源端子ピン間
の電圧を一定に保つ手段２，３と、 ＣＭＯＳロジツクＩＣの一方の電源端子ピンと
電源電圧との間に設けた抵抗の両端電圧を入力と
する差動増幅器と、 を備えた周波数測定装置。[Claims for Utility Model Registration] A CMOS logic IC (complementary metal
Oxide Semiconductor logic IC), means 2 and 3 for keeping the voltage between the two power supply terminal pins of the CMOS logic IC constant, and voltage across a resistor provided between one power supply terminal pin of the CMOS logic IC and the power supply voltage. A frequency measurement device comprising a differential amplifier with an input of and a frequency measuring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11453988U JPH0725715Y2 (en) | 1988-08-31 | 1988-08-31 | Frequency measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11453988U JPH0725715Y2 (en) | 1988-08-31 | 1988-08-31 | Frequency measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0235074U true JPH0235074U (en) | 1990-03-06 |
| JPH0725715Y2 JPH0725715Y2 (en) | 1995-06-07 |
Family
ID=31355382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11453988U Expired - Lifetime JPH0725715Y2 (en) | 1988-08-31 | 1988-08-31 | Frequency measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0725715Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH085590A (en) * | 1994-06-16 | 1996-01-12 | Tdk Corp | Humidity sensor |
-
1988
- 1988-08-31 JP JP11453988U patent/JPH0725715Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH085590A (en) * | 1994-06-16 | 1996-01-12 | Tdk Corp | Humidity sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0725715Y2 (en) | 1995-06-07 |
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