JPS5676630A - Controlling circuit for pulse signal - Google Patents
Controlling circuit for pulse signalInfo
- Publication number
- JPS5676630A JPS5676630A JP15378079A JP15378079A JPS5676630A JP S5676630 A JPS5676630 A JP S5676630A JP 15378079 A JP15378079 A JP 15378079A JP 15378079 A JP15378079 A JP 15378079A JP S5676630 A JPS5676630 A JP S5676630A
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- collector
- base
- current
- pulse
- 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
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
- H03K17/081—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit
- H03K17/0814—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the output circuit
- H03K17/08146—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the output circuit in bipolar transistor switches
Landscapes
- Electronic Switches (AREA)
- Manipulation Of Pulses (AREA)
Abstract
PURPOSE:To prevent the damage of transistors, by providing a current limiting resistance in the collector circuit to which pulsive current is fed. CONSTITUTION:High frequency pulses are input to the collector of a transistor 1 via a resistance 7 and data pulse is fed to the base of a transistor 4. When the data pulse is positive, the transistor 4 is on, the base potential of the transistor 1 is fixed to the emitter potential of the transistor 4, resulting in no output. IF the data pulse is negative, the transistor 4 is off, and since the base current flows to the base of the transistor 1 corresponding to high-frequency pulse, the transistor 1 is operative and high-frequency pulse is appeared at the output. Since current limiting resistances 7, 8 are provided to the collector of the respective transistors, the collector current is limited.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15378079A JPS5676630A (en) | 1979-11-28 | 1979-11-28 | Controlling circuit for pulse signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15378079A JPS5676630A (en) | 1979-11-28 | 1979-11-28 | Controlling circuit for pulse signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5676630A true JPS5676630A (en) | 1981-06-24 |
Family
ID=15569969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15378079A Pending JPS5676630A (en) | 1979-11-28 | 1979-11-28 | Controlling circuit for pulse signal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5676630A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5813026A (en) * | 1981-07-16 | 1983-01-25 | Mitsubishi Electric Corp | Pulse generating circuit |
| JPS6277888A (en) * | 1985-09-30 | 1987-04-10 | Copal Electron Co Ltd | Motor drive circuit |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5370754A (en) * | 1976-12-07 | 1978-06-23 | Nec Corp | Pulse signal control circuit |
-
1979
- 1979-11-28 JP JP15378079A patent/JPS5676630A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5370754A (en) * | 1976-12-07 | 1978-06-23 | Nec Corp | Pulse signal control circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5813026A (en) * | 1981-07-16 | 1983-01-25 | Mitsubishi Electric Corp | Pulse generating circuit |
| JPS6277888A (en) * | 1985-09-30 | 1987-04-10 | Copal Electron Co Ltd | Motor drive circuit |
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