[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 ...

[MaBe42] used the classic LM358 op amp for most of the circuits, along with 1N4148 diodes where possible and 1N4004s where needed – not for their higher power rating, but for their stronger leads.

so the next step is to simulate it with a real op amp, such as the LM358, which does not have rail-to-rail capability, as shown in Figure 4. Given that the other components remain the same we would ...

The 0.1R resistor in the ground rail with the LM358 op-amp forms a low-side current monitor whose output is fed to pin 15 of the microcontroller. First op-amp of LM358 provides a gain of 11 and the ...