JPS5567229A - Pulse detection circuit - Google Patents
Pulse detection circuitInfo
- Publication number
- JPS5567229A JPS5567229A JP14010578A JP14010578A JPS5567229A JP S5567229 A JPS5567229 A JP S5567229A JP 14010578 A JP14010578 A JP 14010578A JP 14010578 A JP14010578 A JP 14010578A JP S5567229 A JPS5567229 A JP S5567229A
- Authority
- JP
- Japan
- Prior art keywords
- pulses
- potential
- terminal
- detection circuit
- capacitor
- 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
Landscapes
- Debugging And Monitoring (AREA)
- Manipulation Of Pulses (AREA)
Abstract
PURPOSE: To make it possible to detect anomaly of a device controlling micro computer easily by combining a unilateral element and a capacitive element and generating a prescribed potential at the output.
CONSTITUTION: Clock pulses are inputted to micro computer 2, and pulses of, for example, 100Hz are sent from buffer 3 on a basis of a program determined previously. These pulses are supplied to diodes 8 and 9 through capacitor 7 of detection circuit 1. Capacitor 11 is connected between the anode of diode 8 and the cathode of diode 9. Consequently, the potential at output terminal 6 is negative when regulator pulses are outputted from buffer 3, and meanwhile, terminal 6 is zero- potential when pulses disappear or the frequency of pulse is a value below 50Hz. As a result, normalcy of the computer can be detected by detecting the potential at terminal 6.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14010578A JPS5567229A (en) | 1978-11-14 | 1978-11-14 | Pulse detection circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14010578A JPS5567229A (en) | 1978-11-14 | 1978-11-14 | Pulse detection circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5567229A true JPS5567229A (en) | 1980-05-21 |
Family
ID=15261046
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14010578A Pending JPS5567229A (en) | 1978-11-14 | 1978-11-14 | Pulse detection circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5567229A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0247917A (en) * | 1988-07-05 | 1990-02-16 | Internatl Business Mach Corp <Ibm> | Missing pulse detector |
JP2006311182A (en) * | 2005-04-28 | 2006-11-09 | Seiko Instruments Inc | Clock detection circuit |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4841888U (en) * | 1971-09-25 | 1973-05-29 | ||
JPS527521B2 (en) * | 1971-09-10 | 1977-03-03 |
-
1978
- 1978-11-14 JP JP14010578A patent/JPS5567229A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS527521B2 (en) * | 1971-09-10 | 1977-03-03 | ||
JPS4841888U (en) * | 1971-09-25 | 1973-05-29 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0247917A (en) * | 1988-07-05 | 1990-02-16 | Internatl Business Mach Corp <Ibm> | Missing pulse detector |
JP2006311182A (en) * | 2005-04-28 | 2006-11-09 | Seiko Instruments Inc | Clock detection circuit |
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