Collaborate Disseminate
When it was first introduced in 1968, Fairchild’s 741 op-amp made quite a splash. And with good reason; it packed a bunch of components into a compact package, and the …read more Continue reading Op-Amp Drag Race Turns Out Poorly for 741
If there’s one thing that amateur radio operators are passionate about, it’s the search for the perfect sine wave. Oscillators without any harmonics are an important part of spectrum hygiene, …read more Continue reading No Inductors Needed for This Simple, Clean Twin-Tee Oscillator
[Janis Alnis] wanted to build an analog computer circuit and bought some multiplier chips. The first attempt used apparently fake chips that were prone to overheating. He was able to …read more Continue reading Lorenz Attractor Analog Computer with Octave Simulation
[IMSAI Guy] got some fake LM358 op-amps. Uncharacteristically, these chips actually performed well even though they didn’t act like LM358s. [IMSAI Guy] did a video about the fake chips and …read more Continue reading Inside a Fake LM358
Normally, if you want to control the gain of an amplifier, you’ll use a variable resistor. You know, like a volume control. But what if you want to control the …read more Continue reading Inside Electronic Gain Control
It is a classic problem when designing with op amps: you need the output to go to zero, but — for most op amps — you can’t quite get down …read more Continue reading Quick Negative Voltage for an Op Amp
The range of human hearing goes up to about 20 kilohertz, which is fine for our purposes, but is pretty poor compared to plenty of other animal species. Dogs famously …read more Continue reading Listening to Bats As They Search For Food
The real world is analog, and the op-amp is the indispensable building block of many analog circuits. We wanted to give you analog fanatics out there a chance to shine …read more Continue reading Congratulations to Our Op-Amp Challenge Winners!
When it comes to our analog designs, op-amps tend to be just another jellybean part. We tend to spec whatever does the job, and don’t give much of a thought …read more Continue reading Op-Amp Challenge: MOSFETs Make This Discrete Op Amp Tick
In the world of audiophilia there are arguments that rage over the relative merits of particular components. Sometimes this can reach silly levels as in the high-end ALPS pot we …read more Continue reading Op-Amp Challenge: Compare Op-Amps, By Listening To Them