JPS5563940A - Power supply method for moisture prevention heater - Google Patents
Power supply method for moisture prevention heaterInfo
- Publication number
- JPS5563940A JPS5563940A JP13527378A JP13527378A JPS5563940A JP S5563940 A JPS5563940 A JP S5563940A JP 13527378 A JP13527378 A JP 13527378A JP 13527378 A JP13527378 A JP 13527378A JP S5563940 A JPS5563940 A JP S5563940A
- Authority
- JP
- Japan
- Prior art keywords
- water drop
- power supply
- heater wire
- power
- sensor
- 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
Abstract
PURPOSE: To make usable under any environment, such that the power is supplied to the heater wire by the detection of water drop under out air temperature higher than freezing temperature while maintaining the power supply irrespective of the existence of water drop after reaching to the freezing temperature.
CONSTITUTION: When required a control circuit is connected to the output terminal 1a of voltage comparator 1 while a circuit conducting with the heater wire provided on rear window glass of vehicle is connected. Resistor 2 and thermistor 3 are the circuit for determining the negative side input and comprising thermister 4 and moisture-sensitive sensor 5, where under normal temperature the sensor 5 detects the water drop to reduce the resistance to make the potentials at points A, B to be A>B thus to supply power, while when there is no water is brings A<B thus to stop the power supply. When the out air temperature drops to freeze the water drop adhered on the glass face, the sensor is disabled to maintain high resistance to bring A>B thus to supply power to the heater wire.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13527378A JPS5563940A (en) | 1978-11-02 | 1978-11-02 | Power supply method for moisture prevention heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13527378A JPS5563940A (en) | 1978-11-02 | 1978-11-02 | Power supply method for moisture prevention heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5563940A true JPS5563940A (en) | 1980-05-14 |
Family
ID=15147841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13527378A Pending JPS5563940A (en) | 1978-11-02 | 1978-11-02 | Power supply method for moisture prevention heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5563940A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003513840A (en) * | 1999-04-30 | 2003-04-15 | サン−ゴバン グラス フランス | Heated window glass, especially for vehicles |
| US7204130B2 (en) | 2002-12-03 | 2007-04-17 | Ppg Industries Ohio, Inc. | Windshield moisture detector |
| US7263875B2 (en) | 2004-10-11 | 2007-09-04 | Ppg Industries Ohio, Inc. | Multi-layer windshield moisture detector |
| US7296461B2 (en) | 2002-12-03 | 2007-11-20 | Ppg Industries Ohio, Inc. | Temperature compensated windshield moisture detector |
-
1978
- 1978-11-02 JP JP13527378A patent/JPS5563940A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003513840A (en) * | 1999-04-30 | 2003-04-15 | サン−ゴバン グラス フランス | Heated window glass, especially for vehicles |
| JP4647104B2 (en) * | 1999-04-30 | 2011-03-09 | サン−ゴバン グラス フランス | Window glass with heating strip |
| US7204130B2 (en) | 2002-12-03 | 2007-04-17 | Ppg Industries Ohio, Inc. | Windshield moisture detector |
| US7296461B2 (en) | 2002-12-03 | 2007-11-20 | Ppg Industries Ohio, Inc. | Temperature compensated windshield moisture detector |
| US7263875B2 (en) | 2004-10-11 | 2007-09-04 | Ppg Industries Ohio, Inc. | Multi-layer windshield moisture detector |
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