bonanz Posted September 11, 2003 Report Share Posted September 11, 2003 Hello all,I am working on a model scale maglev train. along the track there are sensors that detect the positino of the vehicle and power current through a respective coil to form a LIM. I wanted to find an easy way to monitor the speed of the train by using the sensor frequency (evenly spaced) and to give an output. I am not real fond of microcontrollers so i planned to use an LM2917/LM2907 frequency to voltage converter, and then use that voltage to drive a row of led's using a LM3914. The only thing i didnt take into consideration is the train with respect to sensor position (about 4 inches apart) will be outputting a frequency at maximum of 1Hz which would not produce barely any voltage at all coming out of the FTV and therefore not drive the led's. I was wondering if someone was familiar with a way of multiplying such a low frequency into something that the FTV converter would find useful to put out a reasonable voltage, or possibly a simple, yet entirely different approach.Thanks,bonanzbtw. love this site, plan on hanging a round a lot Quote Link to comment Share on other sites More sharing options...
mixos Posted September 12, 2003 Report Share Posted September 12, 2003 I found this Frequency Multiplier:http://users.otenet.gr/~athsam/frequency_multiplier.htmI think it's exellent for your case. With it you can multiply a frequency of 1Hz (or below) a hundrent times. Which is the minimun frequency that LM2917/LM2907 can be driven? Quote Link to comment Share on other sites More sharing options...
ECET0purdue Posted November 23, 2005 Report Share Posted November 23, 2005 are u still around? Quote Link to comment Share on other sites More sharing options...
login
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.