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| Pin | Function | Pin | Function | | :--- | :--- | :--- | :--- | | 1 | NF Left (-In) | 18 | NF Right (-In) | | 2 | Left Signal In | 17 | Right Signal In | | 3 | Bias / Bootstrap L | 16 | Bias / Bootstrap R | | 4 | Left Output | 15 | Right Output | | 5 | +Vcc (Left stage) | 14 | +Vcc (Right stage) | | 6 | +Vcc (Power) | 13 | +Vcc (Power) | | 7 | -Vee (Power) | 12 | -Vee (Power) | | 8 | -Vee (Left stage) | 11 | -Vee (Right stage) | | 9 | Signal Ground | 10 | Heatsink / Substrate Ground |
Use a high-quality coupling capacitor (1µF to 4.7µF non-polar or film) at the input pins to block DC voltage from the source. A 47kΩ resistor to ground is usually placed here to set the input impedance. stk413-430 circuit diagram
Resistor-capacitor (Zobel) networks are typically added at the output pins to prevent high-frequency oscillations and protect speakers. Protection Circuits: | Pin | Function | Pin | Function
Sanyo "SIP" (Single In-line Package) with a large metal heat sink plate. The STK413-430 Circuit Diagram Essentials stk413-430 circuit diagram
When analyzing an existing STK413-430 circuit diagram for repairs:
Grounding and layout
: If you experience high distortion, check for "cold" solder joints or improper earthing, which can cause the circuit to act like an antenna for interference. STK413-430 SANYO HYB-22 Modules - Veswin Electronics