JPS5557917A - Temperature controller - Google Patents
Temperature controllerInfo
- Publication number
- JPS5557917A JPS5557917A JP13182778A JP13182778A JPS5557917A JP S5557917 A JPS5557917 A JP S5557917A JP 13182778 A JP13182778 A JP 13182778A JP 13182778 A JP13182778 A JP 13182778A JP S5557917 A JPS5557917 A JP S5557917A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- angle
- relay
- phase
- scr47
- 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
- Control Of Resistance Heating (AREA)
- Control Of Temperature (AREA)
Abstract
PURPOSE: To make definite full-wave control possible even by using an inductive alternating-current dynamic power control element, by connecting a circuit, which delays a phase by a time equivalent to the arc-extinguishing angle of a current through the power control element, to the input side of a zero pulse generating circuit.
CONSTITUTION: A temperature control circuit for an electric blanket, etc., has additional circuit 75 (including resistance 76 and capacitor C77) which delays a phase by delay angle (θ) (arc-extinguishing angle of SCR47) determined by ratio R/L of inductance L to resistance value R of remote control relay 69 as a load, and consequently an input voltage to sixteen pins of control circuit 41 (including a zero pulse generating circuit) is delayed by angle of (θ). Therefore, a current flowing through secondary winding 692 of transformer relay 69 is lagging a power waveform by angle (θ) to cause unstable ON-OFF operation of its contact 70 in general and normal operation can not be expected, but since SCR47 is triggered through circuit 41 as mentioned above while a phase generated its trigger pulse is delayed by (θ), definite triggering is possible over the whole wave, so that inductive relay 69 will operate smoothly.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13182778A JPS5557917A (en) | 1978-10-25 | 1978-10-25 | Temperature controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13182778A JPS5557917A (en) | 1978-10-25 | 1978-10-25 | Temperature controller |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5557917A true JPS5557917A (en) | 1980-04-30 |
Family
ID=15067019
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13182778A Pending JPS5557917A (en) | 1978-10-25 | 1978-10-25 | Temperature controller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5557917A (en) |
-
1978
- 1978-10-25 JP JP13182778A patent/JPS5557917A/en active Pending
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