voltage to frequency converter?

Answer 1

Marty is a complete idiot.

A voltage to frequency convertor (or V to F) is used on most check weighers. It converts a fibre optic light signal to an electrical signal The higher the voltage the higher the frequency. Most check weighers work around the 11,500 hz mark when running a tare (zero). They will read 60-80,0000 hz per Kg of weight.

Answer 2

Voltage to Frequency convertors are available such as the LM331 from National Semiconductors.

However an example of how you could do this from circuit blocks is;
Use an analog to digital convertor to convert the voltage to a digital representation then latch that value and use it to preload a count down counter - the chances are unless you voltage source is pretty stable it'll will need a load of dampling(averaging) but the principle is there.

Answer 3

What you are actually looking for is called a "Voltage-Controlled Oscillator". Just a different way of saying it ;-)

There are thousands of example circuits, and IC's. A common example uses the 555 timer IC. You could search google for "Voltage-Controlled Oscillator 555" or have a look at this link half way down the page.

http://www.ee.nmt.edu/~thomas/ee322_s06/labs/555_timer.html

I hope this helps! ;-) Ignore the guy who said there is no such thing as a voltage to frequency converter, there are a lot of desperatley unhelpful people on this thing, and I'm not sure why they feel the need to open their mouth!

Answer 4

A voltage to frequency convertor chip certainly exists. I used to use it as an extremely low budget 1 bit analogue to digital convertor. Typical mode was a voltage divider with temp,light sensor etc Supply voltage=5V and the voltage signal to the convertor gave a set of square wave pulses which could be counted and calibrated using software. Think it was a 14Pin D.I.L device series number beginning in the 9 hundreds...and a frequency to voltage chip also exists

Answer 5

Useful chip for instrumentation. Make an analog measurement, the convert it to a frequency. Send it over twister pair, fiber optics, or whatever. At the other end, convert back to voltage with its mirror chip or, for better accuracy, just count the cycles. The commercial chips out there offer really excellent accuracy.

Answer 6

“in case you do no longer understand the place you're going, any highway gets you there.” Lewis Carroll rates (English truth seeker, Mathematician, Photographer and Novelist, fairly remembered for Alice's Adventures in Wonderland. 1832-1898) What voltage? What frequency?

Answer 7

More input! 5 is alive!

Answer 8

Rephrase question.