140w audio amplifier with ic stk070 Hcf4052 datasheet(pdf) Amplifier 140w power audio ic circuit output impedance approximately 8ohm dc
HCF4052 Datasheet(PDF) - STMicroelectronics
70 watt stereo amplifier circuit Amplifier watt circuits channels identical Datasheet stmicroelectronics
140W audio amplifier with IC STK070 - Electronic Circuit
70 Watt Stereo Amplifier Circuit - Homemade Circuit Projects
HCF4052 Datasheet(PDF) - STMicroelectronics