STK4038 is an built in AF power amplifier that will deliver 60 watts of output power into a 4 ohm load. The internal fixed current circuitry reduces switch ON/OFF clicks. The IC supports the addition of external circuits for thermal shutdown, pop noise reduction, output short circuit protection etc.
The 60 watt amplifier is designed Depending about the datasheet and performs incredibly well. Capacitor C1 is the input DC decoupling capacitor Which blocks any DC level present at the audio input and C12 is the input by-pass capacitor. R1 is the input resistor.
C10 and C8 seem like the ripple filter capacitors in to the certain and negative power supply rails. R9 and R7 seem like the current limiting resistors in to the internal driver stage although C11 and C3 seem like their corresponding filter capacitors. Resistor R6 feeds back a portion of those output signal in to the inverting input (pin2). Gain these amplifier depends about the value of R6. C9 and R2 forms a Zobel network Which improves the high frequency stability of those amplifier.
The 60 watt amplifier is designed Depending about the datasheet and performs incredibly well. Capacitor C1 is the input DC decoupling capacitor Which blocks any DC level present at the audio input and C12 is the input by-pass capacitor. R1 is the input resistor.
C10 and C8 seem like the ripple filter capacitors in to the certain and negative power supply rails. R9 and R7 seem like the current limiting resistors in to the internal driver stage although C11 and C3 seem like their corresponding filter capacitors. Resistor R6 feeds back a portion of those output signal in to the inverting input (pin2). Gain these amplifier depends about the value of R6. C9 and R2 forms a Zobel network Which improves the high frequency stability of those amplifier.
