Voltage pulse to current regulating convertor

Details Voltage pulse to current regulating convertor Voltage pulse to current regulating convertor

1985-08-07

1986-08-05

Wong, Peter S.

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

323280, 34087039, 34087042, G05F 158, G08C 1902

Patent

active

046045660

ABSTRACT:
A current regulating convertor includes a pulse generator which generates a voltage pulse train having a variable duty cycle. A low pass filter is connected to receive the pulse train and has a cutoff frequency which is well below the frequency of the pulse train. The low pass filter generates a D/C voltage signal which has a voltage level that is proportional to the duty cycle of the pulse train. The D/C signal is used in a circuit that draws a current from a power supply which is proportional to the voltage level of the D/C signal. The power supply is connected to the circuit by a 4-20 mA currrent loop. 6

REFERENCES:
patent: 4250490 (1981-02-01), Dahlke
patent: 4481514 (1984-11-01), Beukers et al.
patent: 4502003 (1985-02-01), Frick
patent: 4544875 (1985-10-01), Park et al.

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