JPS57211829A - Signal converting circuit - Google Patents
Signal converting circuitInfo
- Publication number
- JPS57211829A JPS57211829A JP9652181A JP9652181A JPS57211829A JP S57211829 A JPS57211829 A JP S57211829A JP 9652181 A JP9652181 A JP 9652181A JP 9652181 A JP9652181 A JP 9652181A JP S57211829 A JPS57211829 A JP S57211829A
- Authority
- JP
- Japan
- Prior art keywords
- contact
- power source
- turned
- power
- inverter
- 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
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/78—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled
- H03K17/795—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled controlling bipolar transistors
- H03K17/7955—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled controlling bipolar transistors using phototransistors
Landscapes
- Electronic Switches (AREA)
Abstract
PURPOSE:To reduce electric power consumption by providing a titled circuit with a power source for applying voltage to a contact and a power source flowing current into the contact independently. CONSTITUTION:When a contact 11 is opened, power voltage is applied from a power source 13 to the contact 11 through a high resistance 12B and, a light emitting diode 16A is turned on and illuminated and an output of an inverter 17 is turned to a high level. When the contact 11 is closed, current from the power source 13 flows into the contact 11 through a diode 14 and electric power to be applied to the light emitting diode 16A is interrupted. Consequently, the output of the inverter 17 is turned to a low level. Since the power source 12A is 48V and the power source 13A is 5V, the whole power consumption 8 is reduced.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9652181A JPS57211829A (en) | 1981-06-24 | 1981-06-24 | Signal converting circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9652181A JPS57211829A (en) | 1981-06-24 | 1981-06-24 | Signal converting circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57211829A true JPS57211829A (en) | 1982-12-25 |
JPH0226819B2 JPH0226819B2 (en) | 1990-06-13 |
Family
ID=14167437
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9652181A Granted JPS57211829A (en) | 1981-06-24 | 1981-06-24 | Signal converting circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57211829A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014075660A (en) * | 2012-10-03 | 2014-04-24 | Mitsubishi Electric Corp | External condition input circuit |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5073370U (en) * | 1973-11-05 | 1975-06-27 | ||
JPS5419614A (en) * | 1977-07-15 | 1979-02-14 | Toshiba Corp | Digital input circuit |
JPS5654124A (en) * | 1979-10-11 | 1981-05-14 | Hitachi Ltd | Contact read-in circuit |
-
1981
- 1981-06-24 JP JP9652181A patent/JPS57211829A/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5073370U (en) * | 1973-11-05 | 1975-06-27 | ||
JPS5419614A (en) * | 1977-07-15 | 1979-02-14 | Toshiba Corp | Digital input circuit |
JPS5654124A (en) * | 1979-10-11 | 1981-05-14 | Hitachi Ltd | Contact read-in circuit |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014075660A (en) * | 2012-10-03 | 2014-04-24 | Mitsubishi Electric Corp | External condition input circuit |
Also Published As
Publication number | Publication date |
---|---|
JPH0226819B2 (en) | 1990-06-13 |
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