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RJM Audio discrete op amp (circuit schematic) - diyAudio
https://www.diyaudio.com/archive/blogs/rjm/1370-rjm-audio-discrete-op-amp-circuit-schematic.html
(Nat Semi will not be making me any offers)... but it does perform the job I want it to do reasonably well: remain stable while providing 6-20 dB of line-level voltage amplification with low distortion, decent PSRR, and sufficient …
Discrete Op Amp : 5 Steps - Instructables
https://www.instructables.com/Discrete-Opamp/
Discrete Op Amp: Once I was googling for discrete op amp ...There is a lot of circuits on net. From standard API2520 to who knows what else. OK. I checked few of them with simulator and noticed that most of them will not work! Or could work conditionally. I will omi…
DIY Op Amps - PassDiy
https://www.passdiy.com/pdf/diyopamp.pdf
audio applications. How Op Amps Work First, a little tutorial on how op amps work. Fig. 1 shows an op amp, which has five connections to the outside world. Two of these are power supply rail pins, +V and -V, which for monolithic op amps usually want to be attached to supply voltages in the range of about 5 to 15 volts each for commercially ...
Sparkos Labs, Inc. Discrete op amps for amplifying audio ...
https://sparkoslabs.com/discrete-op-amps/
The SS3601 / SS3602 discrete op amps will outperform virtually all audio grade monolithic IC op amps in open loop gain, noise performance, output current, and magnitude of class A bias current. Even the coveted OPA627 monolithic op amp, with a price tag of over 25 dollars, has 30dB less gain and around twice the noise of these discrete op amps.
Lab 2: Discrete BJT Op-Amps (Part I)
https://inst.eecs.berkeley.edu/~ee140/sp14/labs/Lab2.ee140.s14.v1.pdf
Lab 2: Discrete BJT Op-Amps (Part II) 3.4. THE OP-AMP In last week’s lab experiment you designed current mirrors and built and tested the first stage of an operational amplifier, namely the input differential pair stage. As mentioned before, since we are using mostly discrete components, we have had to use resistive loads for the first stage.
Audio Amplifier from Discrete Electronic Components ...
https://medium.com/@gayangana97/audio-amplifier-from-discrete-electronic-components-overview-b8d924990372
This unit is designed using discrete electronic components without using any integrated circuits designed for power amplification. Amplifier is a common term used to de s cribe a circuit which can...
Discrete OpAmps - Analog Circuit Design · Samuel Groner
http://www.nanovolt.ch/resources/discrete_opamps/
Discrete OpAmps. Designing and building discrete operational amplifiers is a fascinating business for me. Although IC technology is mature, there are still situations where discrete design beats ICs—typical advantages of discrete amplifiers are potentially high supply voltages, high maximum dissipation, much extended options with respect to choice of passive components …
Discrete Opamp - Burson Audio
https://www.bursonaudio.com/about-us/discrete-circuits/
Discrete circuits are custom built by Burson for specific applications rather than an op-amp’s jack-of-all-trades-master-of-none specifications. The art of circuit design yields superior sound in every way in comparison to simple plug-a-chip engineering. A system can only sound as good as its weakest link.
Homemade Operational Amplifier - Hackaday.io
https://hackaday.io/project/176860-homemade-operational-amplifier
Simple discrete op-amp The inside of a commercially available op-amp consists of many monolithic transistors, but in this case, I decided on a circuit with only five transistors to make the operation as simple as possible as shown in Fig.1. The transistors used general-purpose NPN and PNP complementary pair transistors.
Discrete Operational Amplifier - The Audio Pages (Main Index)
https://www.sound-au.com/project07.htm
Opamps such as the LM4562 are almost impossible to beat with any discrete circuit. There is nothing to indicate that an IC opamp with distortion below 0.001% will sound 'worse' than a discrete circuit. The many claims of opamp 'sound' are generally due to non-blind test methods and are mostly (but not always) false.
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