... Servo + Display (khi hin th) * Ngun õm (-5 v n -1 8v): cung cp cho servo, D/A converter, OPAMP, gii mó * Ngun i xng ( +5v, -5 v, +18v, -1 8v): cung cp cho cỏc OP-AMP, cỏc mch MDA (khuch i thỳc) bng ... cỏc mc in ỏp chớnh b ngun CD VCD in ỏp AC 3v-5v: Dựng t tim ốn hunh quang trờn mn hỡnh hin s, i vi s dng led on thỡ in ỏp ny khụng cú in ỏp õm (- 24v n -5 0v) : Cung cp cho mch hin th (display) ... khụng thay i ( n ỏp) Ngi ta thc hin phn ly mu gm in tr R 1, R2, R3 ni tip t B+ xung mass Chit ỏp R2 iu chnh ỏp ly mu ( sampling voltage ) Nh vy in ỏp B + thay i thỡ in ỏp ly mu thay i theo Phn...