UNIVERSAL_LABORATORY_POWER_SUPPLY

Published:2009/6/25 2:21:00 Author:May | From:SeekIC

The value of the design lies in the use of IC1，an LM317HVK adjustable serles-pass voltage regulator，for broad-range performance remainder supplies voltage-setting and current limiting functions The input to IC1 comes from the output of BR1，which is filtered by C1 and C2 to about +60Vdc，and the input for current-sense comparator IC2 comes from BR2，which also acts as a negative bias supply for regulation down to ground. The output voltage is determined by∶( VOUT - 1.25 + 1.3 ) /( R15 + R16 ) ＝ 1.25 / R8.Thus，the maximum value from each variable supply board is∶VOUT = ( 1.25 / R8 ) × ( R15 + R16 ) = 50.18 Vdc



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