Granted Patent B2

US 7,477,134 · App. 11/744,834 · Granted Jan 13, 2009

Abstract

Claims (19)

1. A peripheral load driver that, when coupled to a conventional doorbell system comprising a primary load, can drive a doorbell system peripheral load at a higher current, said peripheral load driver comprising:

a. power converting means for converting power extracted from said conventional doorbell system from a higher-voltage-at-a-lower-current to a lower-voltage-at-a-higher-current wherein said higher-voltage-at-a-lower-current is insufficient to energize said primary load and said lower-voltage-at-a-higher-current is compatible with said peripheral load.

2. The peripheral load driver of claim 1 , wherein said power converting means comprises a buck converter circuit.

3. The peripheral load driver of claim 1 , further comprising said peripheral load.

4. The peripheral load driver of claim 3 , wherein said peripheral load comprises an illumination device.

5. The peripheral load driver of claim 1 , further comprising first switching means for switching power to and from said primary load thereby controlling the energization and deenergization of said primary load.

6. The peripheral load driver of claim 5 , wherein said first switching means comprises a pushbutton.

7. The peripheral load driver of claim 5 , further comprising a means for continuously powering said primary load when said first switching means has not switched power to said primary load whereby said peripheral load driver is compatible with an electronic primary load.

8. The peripheral load driver of claim 1 , further comprising second switching means for switching said lower-voltage-at-a-higher-current to and from said peripheral load thereby controlling the energization and deenergizeation of said peripheral load.

9. The peripheral load driver of claim 8 , wherein said second switching means comprises a pushbutton.

10. The peripheral load driver of claim 8 , wherein said second switching means comprises sensing means.

11. The peripheral load driver of claim 10 , wherein said sensing means comprises an ambient light sensor.

12. The peripheral load driver of claim 10 , wherein said sensing means comprises a motion sensor.

13. The peripheral load driver of claim 10 , wherein said sensing means comprises a sensor selected from the group consisting of an audible sound sensor, a capacitive sensor, an infrared sensor, a microwave sensor, a radio frequency sensor, a visible light sensor, and an ultrasonic sensor.

14. The peripheral load driver of claim 1 , further comprising logic means for controlling said peripheral load driver.

15. The peripheral load driver of claim 14 , wherein said logic means comprises a circuit selected from the group consisting of a discrete logic circuit, an application specific integrated circuit, a microprocessor circuit, and a state machine circuit.

16. A method for driving a doorbell system peripheral load at a higher current wherein said method utilizes a conventional doorbell system comprising a primary load, said method comprising:

a. converting power extracted from said conventional doorbell system from a higher-voltage-at-a-lower-current to a lower-voltage-at-a-higher-current wherein said higher-voltage-at-a-lower-current is insufficient to energize said primary load and said lower-voltage-at-a-higher-current is compatible with said peripheral load;

b. coupling said lower-voltage-at-a-higher-current to said peripheral load.

Assignments (8)