Nov 2, 2010 · I'm hoping to read the RPM of a gearbox using a hall effect sensor and a frequency to voltage converter IC. I'm using interrupts to calculate RPM right now, but I think having a dedicated chip count pulses will make life easier when trying to log data to an SD card. Can anyone help me out choosing the right lm2907 package? The datasheet lists the lm2907 and lm2917, as well as another variation ...

May 14, 2010 · LM2917-8 LM2917-14 It's based off Russ Kincaid's macromodel for the LM2907-14, which disappeared from the Internet not long after I downloaded it. Your mileage may vary; however the model/simulations may prove useful as a starting place. The .sub file belongs in: \Program Files\LTC\LTSpiceIV\lib\sub The .asc files go in: \Program Files\LTC ...

Aug 20, 2012 · Hi everyone. I have made use of a frequency to voltage converter (LM2917, 8pin version) to convert the frequency from my car's RPM tach signal wire to voltage to then read it with my Arduino and make a digital RPM readout. Here is the circuit I have done: The resistor, capacitor and the diode connected to the tach signal wire is to get rid of the DC offset. There are 2 problems at the moment ...

Aug 6, 2014 · Hello, I have been looking at all of the threads that deal with the LM2917 tachometer trying to find a solution. I am building an engine monitor for a rotary engine in an aircraft. I am using an arduino and want to feed the voltage from the LM2917 to the arduino. I built up a test setup...

Jul 21, 2009 · There is a capacitor and some resistors that need to be added to this in-put to LM2917. So still have not found a "clear explanation" of this addition. Please point me to another thread or jump in this one with some help. Thanks. So do I take the output from my 3 wire sensor and put it to the input of my LM2917 with a 1uf cap in series or parallel?

Jan 6, 2012 · I have scanned through the LM2907/LM2917 datasheets and I need some guidance on which chip to use. I'm not an expert in electronics and I know that the LM2917 has a built-in zener diode. I have also downloaded some models of the LM2907 and LM2917 for LTSpice. I need help choosing appropriate values for the resistors and capacitors.

Mar 2, 2016 · I would like to use LM2917 in Multisim but the component is missing. I'm trying to make it using component wizard but at some point it asks me for model. I can load a spice model (user defined) from file but only .cir files are accepted. I found in this topic LTspice models but they are in asc/asy extension.

Nov 8, 2013 · ho bisogno di sapere il numero di rotazioni di un disco, vorrei qualcosa di più veloce del Pulse in, e ho pensato di mettere dei magneti sul disco e creare un frequenza con un sensore di hall (A3144), e un convertitore frequenza-tensione LM2917 da collegare ad un analog in di arduino. Ho seguito i collegamenti esposti sul datasheet visto che era la stessa applicazione calcolando R3 + R4 (che ...

Nov 25, 2022 · The pickup wire can be used with the 8-pin LM2917/LM2907 and all that is needed to protect the input is a back-to-back diode clamp. Another possibility is the one favoured by Smiths - a current transformer in the supply wire to the coil. Both that and the pickup wire can be used equally well with negative-earth and positive-earth vehicles.

Jun 8, 2010 · From the datasheet of the LM2917 f/v converter I know that Vout= Fin* Vcc*R1*C1. If my original signal is about 4.2V (Vp-p), to which Vout should I design the circuit? Ultimately, in the comparison stage, I need the voltage difference between the original signal and the one received (maybe I should have a subtractor?) in order to measure distance.