JPS6454145A - Operation selector for ventilation fan - Google Patents
Operation selector for ventilation fanInfo
- Publication number
- JPS6454145A JPS6454145A JP20968787A JP20968787A JPS6454145A JP S6454145 A JPS6454145 A JP S6454145A JP 20968787 A JP20968787 A JP 20968787A JP 20968787 A JP20968787 A JP 20968787A JP S6454145 A JPS6454145 A JP S6454145A
- Authority
- JP
- Japan
- Prior art keywords
- hand switch
- ventilation fan
- control circuit
- phase control
- locations
- 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 enable a changing-over operation to be performed at two locations by a method wherein operator's hand switches are located at remote two locations in a remote selector, one hand switch may transmit a plurality of source signals of a plus phase control and the other hand switch may transmit a negative phase control signal and then the transmissions are discriminated by the ventilation fan. CONSTITUTION:Terminals Ka-Kb of a first hand switch 2A and a second hand switch 2B are connected to each other. The other terminals are connected to a pulse conversion circuit of a control circuit at the ventilation fan and an AC power supply. With this arrangement, a selector signal current of the first hand switch 2A is flowed from a semi-wave phase control circuit 2A-2 the terminal Ka the terminal Kb diode 2B-3 control circuit semi- wave phase control circuit 2A-2. In turn, a signal current of the second hand switch 2B is flowed through a diode 2A-3 of the first hand switch 2. Accordingly, the plus side and minus side of the AC signal of ventilation fan can be detected separately and then it can be adopted for an operation instruction from two locations.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20968787A JPS6454145A (en) | 1987-08-24 | 1987-08-24 | Operation selector for ventilation fan |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20968787A JPS6454145A (en) | 1987-08-24 | 1987-08-24 | Operation selector for ventilation fan |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6454145A true JPS6454145A (en) | 1989-03-01 |
Family
ID=16576962
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20968787A Pending JPS6454145A (en) | 1987-08-24 | 1987-08-24 | Operation selector for ventilation fan |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6454145A (en) |
-
1987
- 1987-08-24 JP JP20968787A patent/JPS6454145A/en active Pending
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