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OCR: Vcc Gain control R4 100 K R5 R7 WMM 10 R3 220 4.7K Q1- MJE 3310 D C RIO 10K P R2 ZD2 lOK 10K Motor Input R9 100 R1-6, 9, 10 1/4 W car bon 5% Q2 - MJE 3300 10 W wire- -wound 10% 741 oper af ional ampli fiers Vcc *20 R6, 220 Maximum output current amp Heat- sink transis stors current c to be greater than 100 mA Vee 100K operational transi