JPH0284417U - - Google Patents
Info
- Publication number
- JPH0284417U JPH0284417U JP16389788U JP16389788U JPH0284417U JP H0284417 U JPH0284417 U JP H0284417U JP 16389788 U JP16389788 U JP 16389788U JP 16389788 U JP16389788 U JP 16389788U JP H0284417 U JPH0284417 U JP H0284417U
- Authority
- JP
- Japan
- Prior art keywords
- gain
- capacitor
- gain switching
- switching
- relay
- 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
- 239000003990 capacitor Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Control Of Amplification And Gain Control (AREA)
Description
第１図はこの考案の一実施例による利得切換回
路の回路図、第２図は第１図における利得切換え
時の利得の時間変化を示す波形図、第３図はこの
考案の他の実施例による利得切換回路の回路図、
第４図は第３図における利得切換え時の利得の時
間変化を示す波形図、第５図は従来の利得切換回
路の回路図、第６図は第５図における利得切換え
時の利得の時間変化を示す波形図である。
１……演算増幅器、Ｒ１，Ｒ２，Ｒ３，Ｒ４，
Ｒ５，Ｒ６……抵抗、Ｃ１……コンデンサ、Ｋ１
，Ｋ２Ａ，Ｋ２Ｂ……リレー。なお、図中、同一
符号は同一または相当部分を示す。
Fig. 1 is a circuit diagram of a gain switching circuit according to an embodiment of this invention, Fig. 2 is a waveform diagram showing a time change in gain during gain switching in Fig. 1, and Fig. 3 is another embodiment of this invention. Schematic diagram of gain switching circuit according to
Figure 4 is a waveform diagram showing the time change in gain when switching the gain in Figure 3, Figure 5 is a circuit diagram of a conventional gain switching circuit, and Figure 6 is the time change in gain when switching the gain in Figure 5. FIG. 1...Operation amplifier, R1, R2, R3, R4,
R5, R6...Resistor, C1...Capacitor, K1
, K2A, K2B...Relay. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.
Claims (1)
利得切換えのためのリレーと、利得切換え時に利
得変化に時定数をもたせるためのコンデンサを有
し、利得切換え時の利得のステツプ状変化を抑制
し、利得切換え完了後に上記コンデンサを切り離
すためのリレーと、上記コンデンサの電荷を放電
させるためのリレー及び抵抗を備えたことをを特
徴とする利得切換回路。 an operational amplifier and a resistor for setting the gain;
It has a relay for gain switching and a capacitor for giving a time constant to the gain change during gain switching, suppresses step-like changes in gain during gain switching, and disconnects the capacitor after gain switching is completed. , a gain switching circuit comprising a relay and a resistor for discharging the charge of the capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16389788U JPH0284417U (en) | 1988-12-16 | 1988-12-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16389788U JPH0284417U (en) | 1988-12-16 | 1988-12-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0284417U true JPH0284417U (en) | 1990-06-29 |
Family
ID=31449037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16389788U Pending JPH0284417U (en) | 1988-12-16 | 1988-12-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0284417U (en) |
-
1988
- 1988-12-16 JP JP16389788U patent/JPH0284417U/ja active Pending