JPS5544658A - Direct current constant voltage source circuit - Google Patents

Direct current constant voltage source circuit

Info

Publication number
JPS5544658A
JPS5544658A JP11827978A JP11827978A JPS5544658A JP S5544658 A JPS5544658 A JP S5544658A JP 11827978 A JP11827978 A JP 11827978A JP 11827978 A JP11827978 A JP 11827978A JP S5544658 A JPS5544658 A JP S5544658A
Authority
JP
Japan
Prior art keywords
voltage
resistance
decreases
increases
channel
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
Application number
JP11827978A
Other languages
Japanese (ja)
Inventor
Toshimi Oki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Seiko Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP11827978A priority Critical patent/JPS5544658A/en
Publication of JPS5544658A publication Critical patent/JPS5544658A/en
Pending legal-status Critical Current

Links

Landscapes

  • Continuous-Control Power Sources That Use Transistors (AREA)

Abstract

PURPOSE: To obtain a constant amount of the output at all times without receiving any effect of the fluctuation of the load or the power voltage by installing the emitter follower circuit, the constant current circuit part and the negative feedback circuit each between the transistor, the diode and the output terminal respectively.
CONSTITUTION: In case the voltage of output terminal 6 increases by some reason, the overlap voltage of resistance 7 increases and then inverted via the inverter consisting of transistor Tr11 and resistance R10 to be turned into the gate input voltage of Tr13. As a result, the channel resistance of Tr13 increases, and the current flowing to resistance 12 and Tr13 decreases. This decreases both the voltage across resistance 12 and the voltage to be applied between the gate and the source of Tr14. Accordingly, the current flowing into P-channel Tr8, N-channel Tr9 and diode 2 from Tr14 decreases to decrease the potential at point C as well as the emitter current of Tr14. Thus the increment of the voltage can be reduced down for terminal 6. While in case the output voltage lowers down, the lowering can be prevented by giving the opposite operation to that mentioned above.
COPYRIGHT: (C)1980,JPO&Japio
JP11827978A 1978-09-26 1978-09-26 Direct current constant voltage source circuit Pending JPS5544658A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11827978A JPS5544658A (en) 1978-09-26 1978-09-26 Direct current constant voltage source circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11827978A JPS5544658A (en) 1978-09-26 1978-09-26 Direct current constant voltage source circuit

Publications (1)

Publication Number Publication Date
JPS5544658A true JPS5544658A (en) 1980-03-29

Family

ID=14732717

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11827978A Pending JPS5544658A (en) 1978-09-26 1978-09-26 Direct current constant voltage source circuit

Country Status (1)

Country Link
JP (1) JPS5544658A (en)

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