US Patent No. 9,907,203

FAN CONTROL CIRCUIT


Patent No. 9,907,203
Issue Date February 27, 2018
Title Fan Control Circuit
Inventorship Meng-Liang Yang, Shenzhen (CN)
Assignee HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., Shenzhen (CN) HON HAI...

Claim of US Patent No. 9,907,203

1. A fan control circuit comprising:
a timing circuit;
a switching circuit coupled to the timing circuit and couplable to a fan module; and
a power supply module coupled to the switching circuit;
wherein the power supply module is capable of supplying power to the fan module via the switching circuit;
wherein the timing circuit is configured to output a first control signal to the switching circuit after receiving an input
starting signal;

wherein the switching circuit is configured to deactivate after receiving the first control signal; and
wherein the power supply module is configured to stop supplying power to the fan module in event the switching circuit is
not active;

wherein the switching circuit comprises a first field effect transistor (FET), a second FET, and a third FET, the timing circuit
is coupled to the first FET, the second FET is coupled to the first FET, the second FET is coupled to the third FET, and the
third FET is configured to couple to the fan module.