V2F afterwards
Hi
I have built a small V2F converter based on AD654. I am getting a fairly linear variation of the frequency with voltage.
The purpose of my circuit is to display temperature from a NTC thermistor onto 2-7seg displays without use of ADC chip or a micro controller.
So i decided on V2F. Now i plan to give the frequency output of the V2F to 2-4bit counters. My requirement is in range of 5 to 50'C only. Can anyone help me with how to do other connections to the counter chip(4029).
I have given the V2F output to clock on units counter. When the units counter makes 1010 i reset it and increment the tens counter.
But if i leave the other pins, the counter will keep on counting...So i believe i have to enable the counter for a specific period of time only and disable otherwise. Can anyone help me in calculating this time
Or is there an easier way to do what i want to do(the bigger picture)?
ANy help is greatly appreciated.
thnx
Hi
I have built a small V2F converter based on AD654. I am getting a fairly linear variation of the frequency with voltage.
The purpose of my circuit is to display temperature from a NTC thermistor onto 2-7seg displays without use of ADC chip or a micro controller.
So i decided on V2F. Now i plan to give the frequency output of the V2F to 2-4bit counters. My requirement is in range of 5 to 50'C only. Can anyone help me with how to do other connections to the counter chip(4029).
I have given the V2F output to clock on units counter. When the units counter makes 1010 i reset it and increment the tens counter.
But if i leave the other pins, the counter will keep on counting...So i believe i have to enable the counter for a specific period of time only and disable otherwise. Can anyone help me in calculating this time
Or is there an easier way to do what i want to do(the bigger picture)?
ANy help is greatly appreciated.
thnx