The STK435, with its 15-pin configuration, requires only a few external components, such as electrolytic and ceramic capacitors and resistors. With a 12V DC power supply, the amplifier delivers approximately 7 watts to an 8-ohm speaker, offering excellent audio quality. The author’s prototype is shown in Fig. 1.
Circuit and working
The circuit diagram of the STK435based stereo amplifier is shown in Fig. 2. The design includes the STK IC, resistors, and capacitors, with two audio inputs and corresponding amplified outputs for the right and left channels.
Start by completing the connections for the first amplifier section of IC1, referred to as IC1A. Pin 1 connects to two resistors (R2 and R3) in series, followed by a 100-ohm resistor (R5) leading to the +12V supply. A 10µF, 25V electrolytic capacitor (C3) is connected between the junction of R2 and R3 and the ground. A 0.47µF, 25V electrolytic capacitor (C2) connects to pin 1 of IC1, with its negative terminal linked to a 1-kilo-ohm resistor (R1). Additionally, a 470pF ceramic capacitor (C1) connects the negative terminal of C2 to ground.
This story is from the November 2024 edition of Electronics For You.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.
Already a subscriber ? Sign In
This story is from the November 2024 edition of Electronics For You.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.
Already a subscriber? Sign In
ESP32-Powered AUDIO-VISUAL SIREN
This sound alternator is designed to simulate the effects of a police siren, combining sound and light to create a dynamic audio-visual experience.
BLDC MOTOR With Web-Based Speed Control Using ESP32
Integrating wireless control into brushless direct current (BLDC) motor systems opens up exciting possibilities for applications such as remote-controlled cars, robots, and other innovative systems.
Pi Zero Portable BILINGUAL TRANSLATOR
This system is designed as a bilingual translator, leveraging the gTTS library to support multiple Indian languages, including English (en), Bengali (bn), Gujarati (gu), Hindi (hi), Kannada (kn), Malayalam (ml), Marathi (mr), Tamil (ta), Telugu (te), and Urdu (ur).
Op-Amp-Based VEHICLE THEFT DETECTOR
A simple, low-cost device can effectively alert homeowners or occupants if a parked vehicle is moved or tampered with.
loT SMART METER With Dashboard
Energy meters in homes track electricity usage, enabling accurate billing by governments and providers.
Choose The Right Cloud Platform For Implementing loT PROTOCOLS
Working with loT protocols like MQTT, AMQP, and CoAP on cloud platforms is essential for developing scalable and efficient lol applications. The choice of the programming platform will depend on factors like project requirements, existing skills, and target devices. Leveraging the appropriate libraries and cloud services can enable seamless integration of lol devices with cloud-based applications.
Why TMR SENSORS Lead Next-Generation Design
TMR sensors are gaining traction in industries needing precision and power efficiency. What makes them the go-to choice for modern designs?
DESIGNING PCBs For EMI Management
Electromagnetic interference can derail your PCB’s performance. EMI management is not just a technical necessity but a hallmark of exceptional PCB design.
CUTTING COSTS, NOT CORNERS: Building Large Scale Applications With Open Source Software
Here are some strategies and best practices for leveraging open source to create enterprise-grade web and mobile applications without sacrificing quality or functionality.
"We Are One Of India's Very Few State Bodies To Manage The Entire Lifecycle Of The Electronics EcosystemFrom Approvals To Subsidies."
What is Gujarat State Electronics Mission GSEM), and how is it attracting major investments in electronics manufacturing, particularly semiconductor manufacturing, to Gujarat? To delve deeper, Electronics For You’s Nijhum Rudra spoke with Manish Gurwani, the head of GSEM. Here is what he revealed...
