05604759 is referenced by 10 patents and cites 9 patents.

A drive circuit drives an electronic device that converts electric power into light or heat energy. The drive circuit has a switch connected to the electronic device in series, and a control circuit for providing, in response to an input control signal, a pulse modulation signal for controlling the switch. The frequency of the pulse modulation signal is higher than the response frequency of the electronic device. Alternatively, the drive circuit may have first to fourth switches disposed on both sides of the electronic device, for passing a current in different directions through the electronic device, and a control circuit for controlling the switches to change the direction and magnitude of the average of the current flowing through the electronic device in response to an input control signal.

Title
Drive circuit for electronic device
Application Number
8/10285
Publication Number
5604759
Application Date
January 28, 1993
Publication Date
February 18, 1997
Inventor
Michikazu Shima
Kawasaki
JP
Yuji Miyaki
Kawasaki
JP
Assignee
Fujitsu
JP
IPC
H01S 3/103
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