Quote:
Originally Posted by pizzachef
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This schematic has some glaring errors - be careful. For instance, pins 8 and 9 are connected together - which is problematical since pin 9 is the input from the variable reluctance sensor and pin 8 is ground! Also the inductor between pins 2 and 3 of the LM1815 isn't an inductor - it's a 0.0033 microfarad polyester capacitor, etc. Use the one I posted in my explanation - I took a Tachometer Amplifier completely apart and checked out each component individually.
