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  1. E

    How to make RPM counters

    Use a divide by N counter....say like CD4040 to divide yr input signal and then take to microcontroller  OR.. To avoid microcontroller ,  use CD4040 counter as divider , feed the divided output to Frequency to voltage convertor chip like NE565 PLL  and display it using 3 1/2 digit ADC for...
  2. E

    need help on project amplifier design

    Hi Naveen,                 Do u have any specifics of what do u want in class B (pushpull , complementary symmetry, transformer coupled) or class C (what;s the conduction angle that u;r looking for and what frequency range?? Is this yr university project??  and both these amplifiers are for...
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