Question:

How to make a simple frequency divider which divides 50hz AC input to 1HZ ac output?

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a simple circuit means use of counters,flip flops(jk or prefferable D), plz no answers involving 555 timer ic. there are many divider circuits on the net synchronous and async dividing by 5 and 3. I need a complete circuit which divides 50hz to 1hz in one second only.

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  1. The LS90 is a divide by 5 or 10, so two of these will get you a divide by 50, with a nice 50-50 square wave output. Look at the data sheet for how to connect them.

    First you need a something to reduce your 50hz to a 0 to +5 square wave. Use a voltage divider or transformer to get the 50Hz voltage down to about 10 volts. Look up schmidt trigger circuits and comparators. Us that to get the sine wave into a square wave that is suitable to be applied to a LS90.

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