Electric power control device in an automatic temperature adjusting apparatus
US4723068A · kind A · utility
8Cited by
4References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 24, 1986 |
| Grant date | Feb 2, 1988 |
| Priority date | — |
| Expiry date | Feb 24, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D23/1912
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An electric power control device is composed of plural resistor loads (1.sub.0 -1.sub.4) the heat-generating powers of which are different from one another, switch means (3.sub.0 -3.sub.4) connected in series to each of the resistor loads and adapted for the ON-OFF control of an ac power (2), and means (4.sub.0 -4.sub.4) for ON-OFF controlling the switch means so as to turn on or turn off the ac power and also for selectively controlling the individual resistor loads so as to adjust the heat-generating powers of all of the resistor loads in accordance with their corresponding desired heat-generating powers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.