rusefi.com

I change R10=100k, R11=100k.
All measurments i made. Comment, please

As I show here, it works on emulating, but i not test it i real. Without posted source files it's difficult to comment on the emulation accuracy. Selection of components is critical for understanding if a schematic will work. The opamp selection is critical. Source files are posted as VR.zip

Or to be better than the existing discrete VR designs that don't use an expensive chip like the MAX992x. At the moment the $2 MAX9924 wins by removing the requirement for skilled threshold tuning. Tuning is only need i begining, for C2 + R10 ONLY, My priority list is 1-2) same SINGLE pin VR/Hall in...

Smoczy wrote: ↑

Thu Sep 14, 2023 8:16 pm

obraz.png
It look like it will be good even for single wire VR sensor.

As I show here, it works on emulating, but i not test it i real.

In my opinion, we don't have to be better than MAX992x, it's enough if we are the same (which will make us better because we will do it cheaper, and no 80ms trigger lock). I'm now working on a prototype of the system that I can test on a single-cylinder motorcycle engine. So I don't have to artifici...

no i haven't.
Why do You ask?
Best regards, Lukasz

obraz.png Take a look, 1. In 2 wire VR all jumpers are open, no R11. 2. In 1 wire VR JP1 short, no R11, no D2 - D4. 3. In HALL sensor, all jumpers short, no U2, no R2 - R3, no C1, no D3 - D6 , no R4 - R10, no C2. VCC is the same voltage for power Hall sensor. Any comment and I'm waiting for critici...

Please let me know if anyone has done it, and let me know your comments and observations what problem does this solve on top of existing https://github.com/mck1117/vr-interface? The open problem I am aware of would be a single-wire VR/Hall hybrid solution https://github.com/andreika-git/hellen-one/...

It look like it will be good even for single wire VR sensor.

Please let me know if anyone has done it, and let me know your comments and observations

As You wish... :) The main idea is like in MAX992x or LM1815, so that the offset voltage follows the amplitude of the VR signal. Input amp reject common signal (as most noise from ignition etc.), and the main is to trigger on the rising edge in 0V, and falling edge below 0V. Following the amplitude ...

Maybe someone want to try this schematic of VR sensor amplifier and conditioner

VR - red,
V5 - purple.

Best regards, Luk