JPH0469924U - - Google Patents
Info
- Publication number
- JPH0469924U JPH0469924U JP11307090U JP11307090U JPH0469924U JP H0469924 U JPH0469924 U JP H0469924U JP 11307090 U JP11307090 U JP 11307090U JP 11307090 U JP11307090 U JP 11307090U JP H0469924 U JPH0469924 U JP H0469924U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- voltage
- transistor
- voltage dividing
- power source
- 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
- 239000003990 capacitor Substances 0.000 claims description 4
- 230000010355 oscillation Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Continuous-Control Power Sources That Use Transistors (AREA)
Description
第１図は本考案による基準電圧回路を示す回路
図、第２図は第１図に示す基準電圧回路を使用す
る発振回路の回路図、第３図は第２図に示す回路
のタイムチヤート、第４図は従来の直流基準電圧
回路である。
１……基準電圧回路、２……三角波発生回路（
比較電圧回路）、３……定電流回路、Ｃ……コン
デンサ、Ａｍｐ……増幅器、Ｃｏｍ……比較器、
Ｖｃｃ……直流電源の電源電圧、Ｒ１〜Ｒ６……
抵抗、Ｑ１，Ｑ２……トランジスタ。
FIG. 1 is a circuit diagram showing a reference voltage circuit according to the present invention, FIG. 2 is a circuit diagram of an oscillation circuit using the reference voltage circuit shown in FIG. 1, and FIG. 3 is a time chart of the circuit shown in FIG. FIG. 4 shows a conventional DC reference voltage circuit. 1...Reference voltage circuit, 2...Triangular wave generation circuit (
Comparison voltage circuit), 3... constant current circuit, C... capacitor, Amp... amplifier, Com... comparator,
Vcc...DC power supply voltage, R1 to R6 ...
Resistor, Q 1 , Q 2 ...transistor.
Claims (1)
直列に接続し、該分圧回路の少なくとも１個の抵
抗にトランジスタを並列に接続して、該トランジ
スタのオンとオフ時に前記分圧回路の分圧点から
前記直流電源の電圧と異なるレベルの直流電圧を
出力する基準電圧回路において、前記直流電源の
電流の向きと逆方向の向きに前記トランジスタを
接続したことを特徴とする基準電圧回路。 (2) 複数の抵抗からなる分圧回路を直流電源に
直列に接続し、該分圧回路の少なくとも１個の抵
抗と並列に第１のトランジスタを前記直流電源の
電流の向きと逆方向の向きに接続した基準電圧回
路と、 定電流回路とコンデンサとを直列に接続し、該
コンデンサと並列に前記定電流回路の電流の向き
と逆方向に第２のトランジスタを接続した比較電
圧回路と、 前記分圧回路の分圧点に接続された反転入力端
子、前記定電流回路とコンデンサとの接続点に接
続された非反転入力端子及び前記第１及び第２の
トランジスタのベースに接続した出力端子を有す
る比較器とからなることを特徴とする発振回路。[Claims for Utility Model Registration] (1) A voltage dividing circuit consisting of a plurality of resistors is connected in series to a DC power supply, a transistor is connected in parallel to at least one resistor of the voltage dividing circuit, and the transistor is In a reference voltage circuit that outputs a DC voltage at a level different from the voltage of the DC power source from a voltage dividing point of the voltage divider circuit when on and off, the transistor is connected in a direction opposite to the direction of current of the DC power source. A reference voltage circuit characterized by: (2) A voltage dividing circuit consisting of a plurality of resistors is connected in series to a DC power source, and a first transistor is connected in parallel with at least one resistor of the voltage dividing circuit in a direction opposite to the current direction of the DC power source. a reference voltage circuit connected to the reference voltage circuit; a comparison voltage circuit including a constant current circuit and a capacitor connected in series, and a second transistor connected in parallel with the capacitor in a direction opposite to the current direction of the constant current circuit; an inverting input terminal connected to the voltage dividing point of the voltage dividing circuit, a non-inverting input terminal connected to the connection point between the constant current circuit and the capacitor, and an output terminal connected to the bases of the first and second transistors. An oscillation circuit comprising a comparator having a comparator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11307090U JPH084748Y2 (en) | 1990-10-30 | 1990-10-30 | Reference voltage circuit and oscillator circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11307090U JPH084748Y2 (en) | 1990-10-30 | 1990-10-30 | Reference voltage circuit and oscillator circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0469924U true JPH0469924U (en) | 1992-06-22 |
| JPH084748Y2 JPH084748Y2 (en) | 1996-02-07 |
Family
ID=31860612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11307090U Expired - Lifetime JPH084748Y2 (en) | 1990-10-30 | 1990-10-30 | Reference voltage circuit and oscillator circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH084748Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013128264A (en) * | 2011-06-14 | 2013-06-27 | Freescale Semiconductor Inc | Relaxation oscillator with low power consumption |
-
1990
- 1990-10-30 JP JP11307090U patent/JPH084748Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013128264A (en) * | 2011-06-14 | 2013-06-27 | Freescale Semiconductor Inc | Relaxation oscillator with low power consumption |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH084748Y2 (en) | 1996-02-07 |
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