JPS6441313A - Voltage converting circuit - Google Patents
Voltage converting circuitInfo
- Publication number
- JPS6441313A JPS6441313A JP62197381A JP19738187A JPS6441313A JP S6441313 A JPS6441313 A JP S6441313A JP 62197381 A JP62197381 A JP 62197381A JP 19738187 A JP19738187 A JP 19738187A JP S6441313 A JPS6441313 A JP S6441313A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- output
- circuit
- conversion circuit
- signal
- 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
Landscapes
- Electronic Switches (AREA)
- Logic Circuits (AREA)
Abstract
PURPOSE:To prevent the generation of a short-circuit current flowing through an output transistor (TR) pair in a voltage conversion circuit by applying turning-on an output TR at the power supply point of a 2nd voltage forcibly in a couple of output TRs in the voltage conversion circuit by means of a detection signal representing the absence of the 1st voltage from a voltage detection circuit. CONSTITUTION:When a 1st voltage Vd1 is absent or missing due to any cause, both TRs 315, 312 in the voltage detection circuit 300 are turned off and a potential lower by a gate drive voltage Vg formed by a Zener diode 311 from a 2nd voltage Vd2 is outputted from the voltage detection circuit 300 as a detection signal DS. Thus, a TR 140 in the voltage conversion circuit 100 receiving the signal at its gate is turned on immediately to open forcibly the output TR 101 at the power supply point. Thus, no short-circuit current is generated in the voltage conversion circuit 100 and a potential at a reference potential point is outputted as an output signal of the voltage conversion circuit 100, then the possibility of malfunction of a load receiving the signal is precluded.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62197381A JPH0666668B2 (en) | 1987-08-07 | 1987-08-07 | Voltage conversion circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62197381A JPH0666668B2 (en) | 1987-08-07 | 1987-08-07 | Voltage conversion circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6441313A true JPS6441313A (en) | 1989-02-13 |
JPH0666668B2 JPH0666668B2 (en) | 1994-08-24 |
Family
ID=16373568
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62197381A Expired - Lifetime JPH0666668B2 (en) | 1987-08-07 | 1987-08-07 | Voltage conversion circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0666668B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009166359A (en) * | 2008-01-16 | 2009-07-30 | Seiko Epson Corp | Liquid supplier and liquid injector |
JP2013074339A (en) * | 2011-09-26 | 2013-04-22 | Fujitsu Ltd | Level converter and processor |
-
1987
- 1987-08-07 JP JP62197381A patent/JPH0666668B2/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009166359A (en) * | 2008-01-16 | 2009-07-30 | Seiko Epson Corp | Liquid supplier and liquid injector |
JP2013074339A (en) * | 2011-09-26 | 2013-04-22 | Fujitsu Ltd | Level converter and processor |
Also Published As
Publication number | Publication date |
---|---|
JPH0666668B2 (en) | 1994-08-24 |
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