Tube amp
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Mini audio amplifier circuit
This is a mini-sized power amplifier rated at 2 watts OTL that utilizes the LM380 integrated circuit. It serves as a ready-made circuit for audio applications and communication, requiring minimal external equipment. The capacitor C6 can be selected from a...
Precision-audio-waveform-generator
This circuit generates sinusoidal, square, and triangle waveforms simultaneously. The frequency can be set to a specific value or varied as indicated. An operational amplifier can be added for enhanced drive capability and simplified amplitude adjustment. Additionally, a simple comparator...
Low-noise pre-equalizer circuit
Figure 3-16 illustrates a low-noise preamplifier equalizing circuit using the HA12017. This circuit includes playback components R3, R4, and C4, which conform to a standard balanced network. The gain of the circuit is -7dB at 1kHz, while the output signal...
automatic loudness control circuit schematic
To achieve optimal audio reproduction at varying listening levels, it is essential to adjust tone control settings to align with the established characteristics of human auditory perception. The sensitivity of the human ear changes non-linearly across the entire audible frequency...
Zero Feedback Impedance Amplifiers
The amplifier in question is comparable to another model that has a lower parts count. It is worthy of construction.
The amplifier under discussion features a simplified design that maintains high performance while reducing the number of components required for assembly....
preamp circuit 3
During a Digital Projects Lab, the professor suggested incorporating more circuit-level work into a project. To achieve this, a preamplifier was designed, which included an infrared (IR) remote control to replace a previously built version. The earlier preamplifier functioned well...
Moduler PreamplifierCircuit
High-quality, discrete component design for input and tone control modules to complement the 60-watt MOSFET audio amplifier with a high-quality preamplifier design.
The circuit design focuses on creating a high-fidelity audio preamplifier that enhances the performance of a 60-watt MOSFET audio...
10-W Class A Amplifier
The major advantage of amplifiers of this type is that the normal static power dissipation is very low, and the overall power-conversion efficiency is high. Unfortunately, there are also some inherent disadvantages due to the intrinsic dissimilarity in the response...
Audio mV Meter
This project is an Audio Millivolt Meter designed to measure small audio signals from various equipment and circuits. The circuit features a four-step attenuator at the input, providing ranges of 10mV, 100mV, 1V, and 10V. The gain stage amplifies the...