Stk413-430 Circuit Diagram _verified_ Jun 2026
The offers an excellent balance of power and simplicity for DIY enthusiasts. By carefully following the circuit diagram guidelines, utilizing a robust power supply, and ensuring proper thermal management, it is possible to build a reliable and powerful amplifier.
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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 |
Whether you are building this as a or integrating it with an active pre-amplifier stage. Share public link
High-current audio driving nodes routed directly to speakers through the protection circuit. stk413-430 circuit diagram
VCc(“Positive Supply (V+)
For more information on the STK413-430 circuit diagram and its applications, the following resources are available:
High-quality film capacitors (e.g., ) are used to isolate DC input.
+-----------+ | STK413-430 | +-----------+ | Pin 1: Vcc | | Pin 2: R1 | | Pin 3: IN1 | | Pin 4: R2 | | Pin 5: IN2 | | Pin 6: R3 | | Pin 7: R4 | | Pin 9: OUT1 | | Pin 10: FB1 | | Pin 11: OUT2 | | Pin 12: FB2 | +-----------+ | | v +-----------+ | Speaker | +-----------+ The offers an excellent balance of power and
Building, repairing, or troubleshooting a sound system utilizing this module requires a firm grasp of its pin configuration, peripheral components, and correct wiring topology. Understanding the STK413-430 Internal Architecture
Ensure all ground connections (input, power, speaker) meet at a single point to prevent ground loops.
The typical application circuit diagram for the STK413-430 is shown below. Its external components are identical to many other STK series audio power amplifiers.
Due to its reliability and high fidelity, this IC is widely used in: : Stereo and home theater amplifiers. I need to gather detailed information about this
Separate your Signal Ground (audio input shields) from your Power Ground (heavy current lines from the power supply capacitors). Bring them together at a single point—the Star Ground —to prevent ground loops and loud background humming.
Power Supply: AC 22V-0-22V --> Bridge --> +VCC (Pin1,15) / GND / -VCC (Pin4,13) 4700µF each rail + 0.1µF bypass.
(~±30V to ±36V)”) Vee --> PIN_6 Vee --> PIN_13