CA2168708A1 - Three wire power supply circuit - Google Patents
Three wire power supply circuitInfo
- Publication number
- CA2168708A1 CA2168708A1 CA 2168708 CA2168708A CA2168708A1 CA 2168708 A1 CA2168708 A1 CA 2168708A1 CA 2168708 CA2168708 CA 2168708 CA 2168708 A CA2168708 A CA 2168708A CA 2168708 A1 CA2168708 A1 CA 2168708A1
- Authority
- CA
- Canada
- Prior art keywords
- supply circuit
- power supply
- power source
- load
- power
- 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
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
- Control Of Voltage And Current In General (AREA)
Abstract
A power supply circuit is provided for use in combination with a load and an alternating current (AC) power source for selectively connecting and disconnecting the load and the AC power source. The load is connected between a neutral conductor of the AC power source and the power supply circuit. The power supply circuit is connected to a power or hot line conductor and a ground conductor of the AC power source. The power supply circuit comprises relay connected in series between the load and the line conductor; a control circuit for selectively operating the relay; and a transformer. The primary winding of the transformer is connected in series with the line conductor and the ground conductor for supplying power to the control circuit even when the load is disconnected from the AC
power source. The power supply circuit comprises a switch in series with the primary winding of the potential transformer for interrupting the primary winding current at frequencies above the AC line frequency. The power supply circuit can also comprise a slide or air gap switch to isolate the power supply circuit from the AC power source when the air gap switch is in the OFF position or to limit current to an acceptable level. The air gap switch can be configured to pulse the primary winding current above the accepted level.
power source. The power supply circuit comprises a switch in series with the primary winding of the potential transformer for interrupting the primary winding current at frequencies above the AC line frequency. The power supply circuit can also comprise a slide or air gap switch to isolate the power supply circuit from the AC power source when the air gap switch is in the OFF position or to limit current to an acceptable level. The air gap switch can be configured to pulse the primary winding current above the accepted level.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US38269195A | 1995-02-02 | 1995-02-02 | |
| US382,691 | 1995-02-02 | ||
| US412,502 | 1995-03-29 | ||
| US08/412,502 US5699243A (en) | 1995-02-02 | 1995-03-29 | Motion sensing system with adaptive timing for controlling lighting fixtures |
| US501,847 | 1995-07-13 | ||
| US08/501,847 US5774322A (en) | 1995-02-02 | 1995-07-13 | Three wire power supply circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2168708A1 true CA2168708A1 (en) | 1996-08-03 |
| CA2168708C CA2168708C (en) | 2005-08-30 |
Family
ID=27409587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2168708 Expired - Lifetime CA2168708C (en) | 1995-02-02 | 1996-02-02 | Three wire power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2168708C (en) |
-
1996
- 1996-02-02 CA CA 2168708 patent/CA2168708C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2168708C (en) | 2005-08-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20160202 |