I have been trying for some time now to create a circuit that will read a pulse frequency from my distributor and convert it to a voltage that will change with the engines r.p.m. (like a tachometer). I have done all of the calculations according to the chip makers data sheet but still cant figure out why this circuit wont work correctly. I'm a newbie to electronics and still have alot to learn, but I really need some help at this point. I have attached a schematic along with the calculations for someone to pick apart. Any help surely would make my day...
Thanks
Thanks
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