Schematic Power Amplifier and Layout

AM FM tuner circuit using IC LA1260 – LA1185 FM – AM Tuner system for Radio Music centers Functions FM : IF amplifier, quadrature detector, AF Preamplifier, Tuning indicator drive output AM : RF amplifier, MIX, osc With ALC, IF amplifier, detector, AGC, Tuning indicator drive 16 pin FM 81dB , AM53dB

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

R1,R4 = 47K 1/4W Resistors R2 = 4K7 1/4W Resistors R3 = 1K5 1/4W Resistors R5 = 390R 1/4W Resistors R6 = 470R 1/4W Resistors R7 = 33K 1/4W Resistors R8 = 150K 1/4W Resistors R9 = 15K 1/4W Resistors R10 = 27R 1/4W Resistors R11 = 500R 1/2W Trimmer Cermet R12,R13,R16 = 10R 1/4W […]

Battery Backup Circuit Diagram

LM555 Electronic Schematic Diagram Variable period Oscillator CD4017 part 30