Electronics lesson: electronic parts, electronic components, electronic projects, circuit diagram and more
Sound generator circuit build based on 555 timer IC. This 555 circuit has a flip-flop circuit too, so there are will be 2 kind of outputs, that are a sound output and two blinking LED.
Parts list:
R1, R7 = 470Ω
R2 = 1kΩ
R3 = 68Ω
R4, R6 = 56kΩ
R5 = 47kΩ
Above diagram is the schematic diagram of stereo amplifier, build based integrated circuit STK4141II. This stereo amp will deliver about 25W power output on each channel. Take a note that a heatsink must be attached to the power IC STK4141II to prevent overheating.
This is a power audio amplifier circuit which gaining up to 140W audio output (single input/output). Build two similar circuit to build stereo 140W power amplifier based STA5100.
Circuit diagram for one audio input/output channel:
