digital voltmeter

Components R1 = 180k R2 = 22k R3 = 12k (see note) R4 = 1M R5 = 470k R6 = 560 C1 = 100pF C2 = 100nF C3 = 47nF C4 = 10nF C5 = 220nF P1 = 20k Trimpot U1 = ICL 7107 LD1,2,3,4 = 7 segment Display comon An Note- R3 ( voltmeter scale) 0-20 V ….R3 = 1.2K 0-200 V …R3 = 12K 0-2000 V ..R3 = 120K...