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