JPS56104161A - Mask signal generation circuit - Google Patents
Mask signal generation circuitInfo
- Publication number
- JPS56104161A JPS56104161A JP15426779A JP15426779A JPS56104161A JP S56104161 A JPS56104161 A JP S56104161A JP 15426779 A JP15426779 A JP 15426779A JP 15426779 A JP15426779 A JP 15426779A JP S56104161 A JPS56104161 A JP S56104161A
- Authority
- JP
- Japan
- Prior art keywords
- generation circuit
- signal
- ignition
- resistor
- 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
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Testing Of Engines (AREA)
- Electrical Control Of Ignition Timing (AREA)
Abstract
PURPOSE: To remove a vibration noise except for a knock signal and carry out appropriate ignition time control depending on the occurrence of knocking, by using the base signal of an ignition power transistor to trigger an ignition noise mask signal.
CONSTITUTION: A knock mask timing generation circuit NMT is composed of resistors R98WR105, capacitors C23, C25, diodes D1WD3 and transistors T1WT3. The base current of a power transistor is entered into the resistor R98 to take out a negative surge through a diode D1 to protect the transistor T1. External noises on power lines are removed by the capacitor C25. An output is delayed by the resistor R102 connected in series with the capacitor C23, thereby eliminating a chatter.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15426779A JPS56104161A (en) | 1979-11-30 | 1979-11-30 | Mask signal generation circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15426779A JPS56104161A (en) | 1979-11-30 | 1979-11-30 | Mask signal generation circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56104161A true JPS56104161A (en) | 1981-08-19 |
Family
ID=15580429
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15426779A Pending JPS56104161A (en) | 1979-11-30 | 1979-11-30 | Mask signal generation circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56104161A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56114433U (en) * | 1980-02-04 | 1981-09-03 | ||
JPS58187831A (en) * | 1982-04-27 | 1983-11-02 | Nec Corp | Knocking signal processing circuit |
JPS58225340A (en) * | 1982-06-25 | 1983-12-27 | Nec Corp | Circuit for treating knocking signal |
-
1979
- 1979-11-30 JP JP15426779A patent/JPS56104161A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56114433U (en) * | 1980-02-04 | 1981-09-03 | ||
JPS6319787Y2 (en) * | 1980-02-04 | 1988-06-02 | ||
JPS58187831A (en) * | 1982-04-27 | 1983-11-02 | Nec Corp | Knocking signal processing circuit |
JPS58225340A (en) * | 1982-06-25 | 1983-12-27 | Nec Corp | Circuit for treating knocking signal |
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