JPH0429219U - - Google Patents
Info
- Publication number
- JPH0429219U JPH0429219U JP1990069137U JP6913790U JPH0429219U JP H0429219 U JPH0429219 U JP H0429219U JP 1990069137 U JP1990069137 U JP 1990069137U JP 6913790 U JP6913790 U JP 6913790U JP H0429219 U JPH0429219 U JP H0429219U
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- circuit
- resistance value
- changes according
- diagram
- 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
- 238000010586 diagram Methods 0.000 description 7
- 230000003321 amplification Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
Landscapes
- Amplifiers (AREA)
Description
第１図は本考案の一実施例の回路図、第２図は
Ｕ／Ｄコンバータのブロツク図、第３図はＵ／Ｄ
コンバータの電力利得特性図、第４図は本考案の
他の実施例の回路図、第５図は従来及び本考案の
調整範囲を説明するための図、第６図は従来の一
例の回路図、第７図は従来の増幅回路を用いたＵ
／Ｄコンバータの電力利得特性図である。
８……第２の中間周波増幅回路、８ｂ……増幅
回路、ＲＴＨ……サーミスタ、ＲＴＨ′……正特
性抵抗素子。
Figure 1 is a circuit diagram of an embodiment of the present invention, Figure 2 is a block diagram of a U/D converter, and Figure 3 is a U/D converter.
A power gain characteristic diagram of the converter, FIG. 4 is a circuit diagram of another embodiment of the present invention, FIG. 5 is a diagram for explaining the adjustment range of the conventional and present invention, and FIG. 6 is a circuit diagram of an example of the conventional method. , Figure 7 shows U using a conventional amplifier circuit.
FIG. 3 is a power gain characteristic diagram of a /D converter. 8...Second intermediate frequency amplification circuit, 8b...Amplification circuit, RTH...Thermistor, RTH'...Positive characteristic resistance element.
Claims (1)
利得が変化する増幅回路において、 温度に応じて抵抗値が変化する素子を前記抵抗
に接続した構成としてなる増幅回路。[Claims for Utility Model Registration] An amplifier circuit to which a resistor is connected and whose gain changes according to the resistance value of the resistor, wherein an element whose resistance value changes according to temperature is connected to the resistor. circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990069137U JPH0429219U (en) | 1990-06-29 | 1990-06-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990069137U JPH0429219U (en) | 1990-06-29 | 1990-06-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0429219U true JPH0429219U (en) | 1992-03-09 |
Family
ID=31604179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990069137U Pending JPH0429219U (en) | 1990-06-29 | 1990-06-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0429219U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49124949A (en) * | 1973-03-05 | 1974-11-29 | ||
| JPS544052A (en) * | 1977-06-13 | 1979-01-12 | Hitachi Ltd | Transmission circuit of photo coupling analog signal |
-
1990
- 1990-06-29 JP JP1990069137U patent/JPH0429219U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49124949A (en) * | 1973-03-05 | 1974-11-29 | ||
| JPS544052A (en) * | 1977-06-13 | 1979-01-12 | Hitachi Ltd | Transmission circuit of photo coupling analog signal |