US Pat. No. 9,535,443

MIDDLE PHASE POWER-FETCHING TYPE PHASE FRONT/PHASE TAIL SYNCHRONIZED MODULATION CIRCUIT

Loong Yee Industrial Corp...

1. A middle phase power-fetching type phase front/phase tail synchronized modulation circuit, comprising:
a power supply unit, and
a phase front/phase tail modulation unit, including an MCU microcomputer, a light coupling switch, a driving circuit, and
two bi-directional electronic power supply elements,

wherein, said power supply unit is used to fetch power from a middle phase of an ordinary AC voltage waveform, and supplies
it to said phase front/phase tail modulation unit as a normal working voltage after rectification, and wherein said MCU microcomputer
controls said driving circuit separated by said light coupling switch to turn-on, to control synchronously at least two Power
MOSFETs of bi-directional electronic power supply elements, so as to generate a phase front/phase tail turn-on modulation
signal;

wherein said power supply unit supplies power to said driving circuit through a constant current circuit;
wherein said power supply unit further includes an AC zero voltage activation and sampling circuit, to activate said electronic
power element at zero voltage.

US Pat. No. 10,716,179

SINGLE FIRE-WIRE BI-DIRECTIONAL POWER FETCHING AND DIMMER CONTROL SYSTEM

LOONG YEE INDUSTRIAL CORP...

1. A single fire-wire bi-directional power fetching and dimmer control system, comprising:a dimmer circuit, connected in series to a single fire-wire, the dimmer circuit includes at least a dimmer driver, and two connected bi-directional power electronic components, wherein, one of the bi-directional power electronic components is disposed on an input end of the single fire-wire, and the other bi-directional power electronic component is disposed on an output end of the single fire-wire, through using the two bi-directional power electronic components, both a positive wave AC and a negative wave AC are used to perform phase conduction adjustment, wherein the dimmer circuit is a neutral-wire-free dimmer circuit;
a single fire-wire bi-directional power fetching module, connected in series to the dimmer circuit, and is disposed between the two bi-directional power electronic components, to perform single fire-wire power fetching when the dimmer circuit is conducting, the two bi-directional power electronic components are formed respectively by two separate high voltage high power MOSFETs, and the dimmer driver is an MOSFET dimmer driver, in which, a dimmer cycle ratio of the dimmer circuit is controlled to be in a range of 15% to 95%;
a high side buck, connected in parallel to the dimmer circuit, with one end of the converter circuit disposed on the input end of the single fire-wire connected to one of the two bi-directional power electronic components, and with the other end of the converter circuit disposed on the output end of the single fire-wire connected to the other of the two bi-directional power electronic components, wherein the high side buck converter circuit is a full-bridge rectifier; and
a DC to DC converter, with an input end of the converter for fetching power connected to the single fire-wire bi-directional power fetching module, and the high side buck; and with an output end of the converter for supplying power connected to the dimmer driver of the dimmer circuit, to perform single fire-wire bi-directional light dimming.

US Pat. No. 9,837,928

SINGLE FIRE-WIRE PHASE-FRONT DYNAMIC AC POWER FETCHING MODULE

LOONG YEE INDUSTRIAL CORP...

1. A single fire-wire phase-front dynamic AC power fetching module, comprising: two series-connected type synchronous power
fetching circuits connected in parallel, and an electronic switch connected thereto, one series-connected type synchronous
power fetching circuit is used to perform positive phase AC power fetching, while the other series-connected type synchronous
power fetching circuit is used to perform negative phase AC power fetching; the one series-connected type synchronous power
fetching circuit includes a synchronous rectifier outside power supply unit, a synchronous rectifier inside power supply unit,
a synchronous AC voltage control unit, a FET driven zero-crossing control unit, a synchronous load dynamic regulating unit,
and a synchronous zero-crossing AC power fetching unit, wherein a bi-directional dynamic full-bridge type power fetching design
is adopted, such that on a single fire wire, power fetching is performed twice in a cycle of AC, a duration of power fetching
is regulated automatically depending on a load, to compensate for the power, and supply it to an outside circuit as a basic
power supply;
wherein, one end of the synchronous rectifier outside power supply unit is connected to the fire wire of a power supply, while
the other end is connected to a stable DC voltage output end; one end of the synchronous rectifier inside power supply unit
is connected to the fire wire of a power supply, while the other end of the synchronous rectifier inside power supply unit
is provided with a first branch connecting to one end of the synchronous load dynamic regulating unit and the synchronous
AC voltage control unit, and the other end of the synchronous rectifier inside power supply unit is further provided with
a second branch connecting to the FET driven zero-crossing control unit and the synchronous zero-crossing AC power fetching
unit, and the other end of the synchronous load dynamic regulating unit; one end of the FET driven zero-crossing control unit
is connected to the second branch of the synchronous rectifier inside power supply unit, and the one end of the FET driven
zero-crossing control unit is also connected to and controls the synchronous zero-crossing AC power fetching unit; while the
other end of the FET driven zero-crossing control unit is connected to and controlled by the synchronous AC voltage control
unit; and the synchronous zero-crossing AC power fetching unit is connected to and controlled by the FET driven zero-crossing
control unit, and the synchronous zero-crossing AC power fetching unit is provided with a power fetching synchronous sampling
end, connected to and controls the synchronous load dynamic regulating unit and the synchronous AC voltage control unit, in
addition, one end of the synchronous zero-crossing AC power fetching unit is connected to the fire wire through the electronic
switch, while the other end of the synchronous zero-crossing AC power fetching unit is connected in parallel to the synchronous
zero-crossing AC power fetching unit of the other series-connected type synchronous power fetching circuit;

wherein, the fire wire is provided with an input end and an output end, the synchronous zero-crossing AC power fetching unit
of the series-connected type synchronous power fetching circuit is connected to the input end of the fire wire, while the
synchronous zero-crossing AC power fetching unit of the other series-connected type synchronous power fetching circuit is
connected to the output end of the fire wire; the synchronous rectifier outside power supply unit and the synchronous rectifier
inside power supply unit of one series-connected type synchronous power fetching circuit are connected to the input end of
the fire wire; while the synchronous rectifier outside power supply unit and the synchronous rectifier inside power supply
unit of the other series-connected type synchronous power fetching circuit are connected to the output end of the fire wire;
the other ends of the two synchronous rectifier outside power supply unit are connected in parallel, to form a stable DC voltage
output end.

US Pat. No. 10,616,982

SINGLE LIVE-WIRE POWER FETCHING SYSTEM CAPABLE OF PREVENTING FLICKERING AND ENHANCING POWER FETCHING EFFICIENCY

LOONG YEE INDUSTRIAL CORP...

1. A single live-wire power fetching system capable of preventing flickering and enhancing power fetching efficiency, comprising:a single live-wire power fetching switch module, a High Side Buck ac/dc, and a multifunction rectifying unit, wherein
the single live-wire power fetching module is provided with a live-wire input end and a live-wire output end, to be connected in series to a single live-wire to perform single live-wire power fetching, and to supply power for a normal operation of circuits in the single live-wire power fetching switch module;
the High Side Buck ac/dc is used to provide part of power for single live-wire power fetching, with an input end of the High Side Buck ac/dc connected in parallel to the single live-wire power fetching switch module through the multifunction rectifying unit, and with an output end of the High Side Buck ac/dc connected to the single live-wire power fetching switch module to provide power;
the multifunction rectifying unit is connected in series to the input end of the High Side Buck ac/dc, and to be connected to the live-wire input end of the single live-wire power fetching switch module, wherein
the multifunction rectifying unit includes:
a non-isolated half-wave rectifier, with a positive end of the non-isolated half-wave rectifier connected to the live-wire input end,
a flickering prevention voltage regulator, connected in parallel to the positive end of the non-isolated half-wave rectifier, and
an enhanced power fetching waveform regulator, connected in series between a negative end of the non-isolated half-wave rectifier and the input end of the High Side Buck ac/dc.