Voltage generating system

Details Voltage generating system Voltage generating system

H - Electricity

03

J

365/13, 323/4

H03J 3/18 (2006.01) H03J 5/02 (2006.01) H03M 1/00 (2006.01) H04N 5/50 (2006.01)

Patent

CA 1052920

ABSTRACT OF THE DISCLOSURE A voltage generating system comprising generators for producing a plurality of reference voltages, switching devices provided in the reference voltage generators such that any of a given one or given ones of the reference voltages may be selectively taken out, an integrator to smooth a selected re- ference voltage to obtain an output voltage, a switching pulse generator to produce a switching pulse signal for switching the switching devices and a circuit to vary the duty ratio of the switching pulse signal so as to vary the magnitude of the output voltage. This voltage generating system may be used for generat- ing a channel selection voltage for electronic tuners (varactor tuners), for digital-to-analog converter circuits etc.

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