基本信息
摘要:1,224,517. Semi-conductor converter. SIEMENS A.G. 4 Nov., 1968 [3 Nov., 1967], No. 52237/68. Addition to 1,189,410. Heading H3T. [Also in Division G1] A D.C. to D.C. converter (amplifier) using a magneto-resistive element 8, 9 as in the parent Specification, is improved either by connecting a high conductivity shunt 1 across the input winding 4 and a temperature independent resistor 18 across the output winding 6, or by arranging that the input winding 4 and feedback winding 6 have equal temperature coefficients of resistivity, equal power losses and heat dissipation, and are maintained at equal temperatures, the output in either case being taken from the feedback winding circuit. The output may be taken across the temperature independent resistor 18. The windings 4, 6 are wound to produce good thermal contact between them. The time constant of the input winding is preferably made equal to that of a shunt 1, 20, connected across it for current driven operation by selection of the inductance 20 of the shunt and/or by light coupling between the input winding 4 and the feedback winding 6.
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