What converts frequency to voltage?
#1
Senior Member
Thread Starter
Join Date: Nov 2000
Location: Cannonville,Ut,Usa
Posts: 657
Likes: 0
Received 0 Likes
on
0 Posts
What converts frequency to voltage?
Hi,
what is the part that converts the signal from the transmission to a linear voltage? I would like to find a way to monitor a flyweel speed and run a Variable frequency drive. The VFD uses a 4-20 ma or 1-10 volt input.
Thanks
what is the part that converts the signal from the transmission to a linear voltage? I would like to find a way to monitor a flyweel speed and run a Variable frequency drive. The VFD uses a 4-20 ma or 1-10 volt input.
Thanks
#2
Moderator
iTrader: (1)
Join Date: Mar 2002
Location: Chasing Electrons
Posts: 18,402
Likes: 0
Received 215 Likes
on
201 Posts
Car: check
Engine: check
Transmission: check
Re: What converts frequency to voltage?
Originally posted by AustinT
Hi,
what is the part that converts the signal from the transmission to a linear voltage? I would like to find a way to monitor a flyweel speed and run a Variable frequency drive. The VFD uses a 4-20 ma or 1-10 volt input.
Thanks
Hi,
what is the part that converts the signal from the transmission to a linear voltage? I would like to find a way to monitor a flyweel speed and run a Variable frequency drive. The VFD uses a 4-20 ma or 1-10 volt input.
Thanks
For an external thing-a-ma-bobber look at the Nat-Semi LM2907/LM2917 chip. It is a freq to voltage converter. Great for stuff like converting the VSS to a linear voltage that can be displayed on a voltmeter (with the volts as a direct MPH reading).
RBob.
#4
Hey, maybe this LM2907/2917 thing is what I'm looking for. I recently installed a 6-speed tranny in my other car. This tranny has a reverse lock out solenoid in it. I would like to tap into the VSS (99 Mustang) and when the MPH is anything less than 5 mph, it should supply 12v to this solenoid, which then opens up the solenoid. I would like to do this all via hardware, so I'm envisioning some sort of little black box with this LM2907/2917 thing inside. Can someone give me some info/pointers on how something like this might work and what components I would need?
I'm guessing what I would need to do is first establish what the voltage would be at 5 mph. Then from there, install some sort of circuitry in this little black box that would "flip a switch" thus supplying 12v to the solenoid. Any help would be appreciated!
I'm guessing what I would need to do is first establish what the voltage would be at 5 mph. Then from there, install some sort of circuitry in this little black box that would "flip a switch" thus supplying 12v to the solenoid. Any help would be appreciated!
#5
Check this out. http://www.national.com/ds/LM/LM2907.pdf It has all the info you need, even some sample circuits.
Thread
Thread Starter
Forum
Replies
Last Post