Digital control electronic having a pulse width modulated (PWM)-

Details Digital control electronic having a pulse width modulated (PWM)- Digital control electronic having a pulse width modulated (PWM)-

1992-03-20

1994-05-10

Chin, Stephen

Pulse or digital communications

Repeaters

Testing

34082563, H02M 310, G05B 1128, H01F 718

Patent

active

053115481

ABSTRACT:
A digital electronic control apparatus for controlling at least one electronic control element comprises. The apparatus comprises first and second pulse width modulated output signal generators, the frequency of the second signal being different from the first. The second pulse width modulated signal is provided as a function of a digital value determined by at least one of a characteristic and operating condition of the at least one electronic control element. An AND-gate receives the first and second pulse width modulated signals and is capable of producing an output signal for controlling the at least one electronic control element a first and second pulse width modulated signal having a first frequency.

REFERENCES:
patent: 2725191 (1955-11-01), Ham
patent: 3568147 (1975-03-01), Gilson
patent: 4497068 (1985-01-01), Fisher
patent: 4543575 (1985-09-01), Liermann
Patents Abstract of Japan vol. 10 No. 300 (P-506) 2356 Oct. 1986 re JP-A-61 117 602.
"Constant Voltage source . . . ", Elektor Electronics, Feb. 1984, pp. 2-59--2-61.

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