simonpedro
New Member
Hi, I'm trying to copy a circuit (I seen that just for a while), have a rotor with a captor that generates a pulse at every turn.
A potenciometer controls the reference rpm, so if the rpm are stable (arround the reference rpm) nothing happens, but if the rpm go up, a signal is generated (an light turns on, a big one, an 11Watts 12Volts lamp). If the rpm go down, another light turn on.
That works fine, they can regulate the rpm emergency areas with the potenciometer.
To do that, I think they convert to tension the pulses from de captor with an lm2907 or something and then compare the output with the potenciometer output through a couple of operational amplifiers, or an lm339 may be.
But I'm not very good in that (neither english xd, I really bad in fact), how can I do that? is good idea do that with an lm2917 and lm339? will that can manage the 11watts lamps?
Sorry for my english.
Thanks
A potenciometer controls the reference rpm, so if the rpm are stable (arround the reference rpm) nothing happens, but if the rpm go up, a signal is generated (an light turns on, a big one, an 11Watts 12Volts lamp). If the rpm go down, another light turn on.
That works fine, they can regulate the rpm emergency areas with the potenciometer.
To do that, I think they convert to tension the pulses from de captor with an lm2907 or something and then compare the output with the potenciometer output through a couple of operational amplifiers, or an lm339 may be.
But I'm not very good in that (neither english xd, I really bad in fact), how can I do that? is good idea do that with an lm2917 and lm339? will that can manage the 11watts lamps?
Sorry for my english.
Thanks