Description: This circuit should be connected prior to the amplifier circuit. To achieve optimal performance, it is recommended to utilize high-quality electronic components such as metal film resistors, MKM capacitors (non-polar), and tantalum capacitors (bipolar). The power supply module can be substituted with a regulated and stabilized power supply, or alternatively, an IC LM7815 can be added after R35, and an IC LM7915 can be added after R36.
The circuit outlined is designed to enhance the performance of an amplifier by ensuring that it receives a clean and stable power supply. The use of high-quality components is essential in minimizing noise and distortion, which can significantly impact the amplifier's output quality. Metal film resistors are preferred due to their low noise characteristics and high precision, making them suitable for audio applications where signal integrity is paramount.
MKM capacitors are non-polarized, making them versatile for various applications, while tantalum capacitors offer excellent capacitance stability and reliability in bipolar configurations. These choices contribute to improved frequency response and transient response in the circuit.
The inclusion of a regulated power supply is critical for maintaining consistent voltage levels, which is essential for the reliable operation of the amplifier circuit. The LM7815 voltage regulator provides a stable +15V output, while the LM7915 provides a stable -15V output. Connecting these regulators after resistors R35 and R36 ensures that the amplifier receives the necessary dual power supply voltages, which are often required for operational amplifiers and other audio processing devices.
In summary, the circuit serves as a vital precursor to the amplifier, ensuring that it operates under optimal conditions with minimal interference from power supply fluctuations. The careful selection of components and the implementation of voltage regulation are key factors in achieving high-performance audio amplification.This circuit must be connected before the amplifier circuit. For maximum performance, you may use high quality electronic component such as metalfilm resistor, MKM capacitor (nonpolar), tantalum capacitor (bipolar). You may replace the power supply module with regulated and stabilized power supply or just add IC LM7815 after R35 and IC LM7915 afte
As shown in the figure, the DN-25 IC is a switching power supply. The DN-25 is a monolithic switching power supply device suitable for medium output current applications and a wide voltage range. Its main performance indicators include an input...
Symmetric 12V to 5V converter power supply. Refer to the designated page for an explanation regarding the associated circuit diagram.
The symmetric 12V to 5V converter power supply is designed to efficiently step down a 12V input voltage to a regulated...
This circuit enables the adjustment of the gain for two stereo channels to achieve equal levels. The signal across the load resistors for both channels is sampled using resistors R2, with their values depending on the power level. For a...
The circuit is designed to eliminate the vocal portion of an audio signal while preserving the instrumental portion. It achieves this by mixing two channels that are 180° out of phase, allowing the signals that create the center-stereo image to...
This is a specialized circuit design for a power supply failure alarm. Most power supply failure alarm or indicator circuits require an independent power supply. However, the alarm circuit presented here...
The power supply failure alarm circuit is designed to monitor...
Now that these power supplies are available, it would be beneficial to evaluate their performance. Traditionally, an adjustable load (a robust resistor) is connected to the output to measure both output voltage and current at various points. This allows for...
The add-on circuit presented here is useful for stereo systems. This circuit has provision for connecting stereo outputs from four different sources/channels as inputs and only one of them is selected/connected to the output at any one time. When power...
It many times happens, we want erase or decrease in a musical song, the voice of singer or some other sound that usually is written in same level and in the two channels. If we remove between them two signals...
Sometimes, for a variety of reasons, it would be nice to vary the width of the sound stage when listening to stereo recordings. Although technically this is anything but hi-fi, it is a useful addition to PC speakers, or even...
We use cookies to enhance your experience, analyze traffic, and (if you allow) serve personalized ads.
By clicking Accept All, you agree to our use of cookies.
Learn more