Doorbell system and doorbell control device
First Claim
1. A doorbell system, comprising:
- a doorbell control device, having a first pin, a second pin, a third pin, and a fourth pin, wherein the doorbell control device is configured to control a conducting state between the first pin and the third pin according to a current or a voltage of the second pin, and the first pin is coupled to the second pin;
a transformer, outputting an AC voltage to the first pin and the fourth pin of the doorbell control device;
a doorbell interface device, coupled to the second pin and the fourth pin of the doorbell control device; and
a chime device, coupled to the third pin and the fourth pin of the doorbell control device;
wherein the doorbell control device comprises;
a voltage conversion circuit, coupled to the first pin and the fourth pin, configured to generate a second DC voltage;
a switch unit, configured to switch the conducting state between the first pin and the third pin; and
a control unit, powered by the second DC voltage, configured to control the switch unit according to the current or the voltage of the second pin.
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Accused Products
Abstract
A doorbell system and a doorbell control device are provided. The doorbell system includes a doorbell control device, a transformer, a doorbell interface device, and a chime device. The doorbell control device has a first pin, a second pin, a third pin, and a fourth pin. The doorbell control device is configured to control a conducting state between the first pin and the third pin according to a current or a voltage of the second pin. The first pin is coupled to the second pin. The transformer outputs an AC voltage to the first pin and the fourth pin of the doorbell control device. The doorbell interface device is coupled to the second pin and the fourth pin of the doorbell control device. The chime device is coupled to the third pin and the fourth pin of the doorbell control device.
48 Citations
10 Claims
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1. A doorbell system, comprising:
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a doorbell control device, having a first pin, a second pin, a third pin, and a fourth pin, wherein the doorbell control device is configured to control a conducting state between the first pin and the third pin according to a current or a voltage of the second pin, and the first pin is coupled to the second pin; a transformer, outputting an AC voltage to the first pin and the fourth pin of the doorbell control device; a doorbell interface device, coupled to the second pin and the fourth pin of the doorbell control device; and a chime device, coupled to the third pin and the fourth pin of the doorbell control device; wherein the doorbell control device comprises; a voltage conversion circuit, coupled to the first pin and the fourth pin, configured to generate a second DC voltage; a switch unit, configured to switch the conducting state between the first pin and the third pin; and a control unit, powered by the second DC voltage, configured to control the switch unit according to the current or the voltage of the second pin. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A doorbell control device, having a first pin, a second pin, a third pin, and a fourth pin, the doorbell control device comprising:
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a voltage conversion circuit, coupled to the first pin and the fourth pin, configured to generate a second DC voltage; a switch unit, configured to switch a conducting state between the first pin and the third pin; and a control unit, powered by the second DC voltage, configured to control the switch unit according to a current or a voltage of the second pin; wherein the first pin is coupled to the second pin. - View Dependent Claims (8, 9, 10)
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Specification