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Posts tagged Simple Microphone Preamp with AGC

Portable Mic Pre-amp 2 transistor

Portable Mic Pre-amp 2 transistor using BC549C, BC547B

Circuit diagram Segment LED using L7107

Circuit diagram Segment  LED using L7107 R1= 9.1 M R2=910 K R3=91 K R4=9.1 K R5=1 K R6=100 K R7= 5 K R8=5.6K R9=1 M R10=47 K R11,R12,R13=220 ohm C1=100 pF C2=0.1uF C3=0.01uF C4=0.47uF C5=0.22uF C6=0.33uF C7=1uFC8=C4=0.047uF C9=10uF D1,D2:n4148 D3:Led D4,D5:led IC1: ICL7107 Digital analog converter circuit L7107 and seven-segment decoder R1= 9.1 M R2=910 […]

stk audio ic 60W

stk audio ic 60W 60W AF Amplifier With STK-0060II circuit diagram

PC serial port RS-232 pin out and wiring

PC serial port RS-232 pin out and wiring

Segment Counter circuit

Segment Counter circuit 7 Segment LED Counter circuit Diagram using NE555, CD4033

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