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Current sensing circuit disconnect device and method

a current sensing circuit and disconnect device technology, applied in safety/protection circuits, emergency power supply arrangements, transportation and packaging, etc., to avoid spurious triggering, improve triac immunity, and improve false turn on immunity

Inactive Publication Date: 2021-09-23
SCHWARTZ ROBERT M
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

Significantly reduces electricity usage by eliminating current flow during standby and idle modes, while ensuring the charging device can reconnect when necessary, thus minimizing energy wastage and maintaining component reliability.

Problems solved by technology

This can be caused by electrical noise or other transient voltages from the mains.

Method used

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  • Current sensing circuit disconnect device and method
  • Current sensing circuit disconnect device and method
  • Current sensing circuit disconnect device and method

Examples

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Embodiment Construction

[0037]Referring now to FIG. 2, as disclosed in this application is a circuit similar to earlier circuits but more robust. CR1 represents a diode bridge to output direct current. The secondary circuit S operates on a stepped down voltage from the input voltage on the primary circuit P, as a result of transformer T1. Transformer T1 can also be a switching transformer where there would be a primary circuit P and a secondary circuit S.

[0038]Further as shown in FIGS. 9 and 10, a circuit showing a portion of the present invention includes a snubber circuit 200 in parallel with the triac 210 an optocoupler switch, which is opened to prevent current flow in the secondary side of the circuit and in the primary side, except for a small amount of current through the snubber circuit. The snubber circuit 200 includes, in series, a resistor 212 and a capacitor 214. An LED 250 is also shown as part of the optically isolated switch 205. The design of a snubber circuit involves compromises, includin...

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Abstract

A device and method are provided for saving power and electricity in a charging device including external power supplies and battery chargers having a primary circuit and a secondary circuit where a switch is located in the primary circuit and a current sensing device in the secondary circuit to sense when there is a drop in current in the secondary circuit or no current in the secondary circuit because the load such as a cell phone or tablet is charged and when this occurs the switch in the primary circuit is opened and the primary circuit no longer draws power from the source of power until the switch in the primary circuit is closed by either a user activating a switch to reenergize the charging device, where the switch may be powered by an on-board battery to close the primary circuit, or where a control circuit is activated by a program in the load or device to be charged, such that the charging device will cycle on and off according to an external app program residing on the device to be charged or some other device not attached to the controller.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation application of co-pending U.S. patent application Ser. No. 16 / 102,303, filed Aug. 13, 2018, which was a continuation-in-part application of U.S. patent application Ser. No. 14 / 329,787, filed Jul. 11, 2014, now U.S. Pat. No. 10,050,459, dated Aug. 14, 2018 entitled Current Sensing Circuit Disconnect Device and Method, which claims the benefit of Provisional Application Ser. No. 61 / 845,179, filed Jul. 11, 2013 and which was a continuation-in-part application of U.S. patent application Ser. No. 13 / 908,217, filed Jun. 3, 2013, now U.S. Pat. No. 9,627,903, dated Apr. 18, 2017, which claims the benefit of Provisional Application Ser. No. 61 / 825,164, filed May 20, 2013 and which is a continuation-in-part application of U.S. patent application Ser. No. 13 / 892,509, filed May 13, 2013, now U.S. Pat. No. 9,035,604, dated May 19, 2015, which was a continuation-in-part application of U.S. patent application Ser. No. ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H02J7/00H02M1/34H02J9/00H02M1/36
CPCH02J7/00H02J7/0031H02M7/06H02J9/005H02M1/36H02M1/34H02J2207/20H02J9/007H02J7/0029Y02B70/10H02M1/0032H02M1/348
Inventor SCHWARTZ, ROBERT M.
Owner SCHWARTZ ROBERT M
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