thanq bernard,
i'llwork over this.
i'llwork over this.
Hi bernard,Here is a slightly revised print with a little more labling. A better data sheet on the 4528 would help to identify proper termination of unused pins. I'll try a short explanation: Your shaped pulse at input 3 sets FF,Q goes high starting the charging of C1 at about 13μA. Second pulse resets FF stopping charging,notQ triggers OS A closing SW B charging C2 to C1 V.,trailing edge of pulse triggers OS B, closing SW A, dumping C1. OP Amps present a high Z to caps with a gain of one.
Here is a slightly revised print with a little more labling. A better data sheet on the 4528 would help to identify proper termination of unused pins. I'll try a short explanation: Your shaped pulse at input 3 sets FF,Q goes high starting the charging of C1 at about 13μA. Second pulse resets FF stopping charging,notQ triggers OS A closing SW B charging C2 to C1 V.,trailing edge of pulse triggers OS B, closing SW A, dumping C1. OP Amps present a high Z to caps with a gain of one.
You previously said,Hi bernard,
Im having some doubts in the circuit u attached here.
If thetime gap between the pulses is around 0.1sec,can i use the same time constant components for 4528(a) & 4528(b) for this case?
Im getting the time gap is sround 0.3 seconds.
And can i use LM324 or 741 in place of the opamps shown in ur circuit?
U mentioned something like GAIN=1.
thanQ
Are you changing the requirements to 0.1 sec minimum?The period range is (0.3sec ~ 6 sec).
Iam using an induction motor of maximum speed 200rpm.You previously said, Are you changing the requirements to 0.1 sec minimum?
Hi ronv,Send me an e-mail address and I'll send you a circuit.
How long is the short pulse? I think that is the one to measure then hold it for the long (.3 to .6 sec. ) pulse. I assume it's a hole in the wheel or something like that.
Ronv@wbhsi.net
Here is a slightly revised print with a little more labling. A better data sheet on the 4528 would help to identify proper termination of unused pins. I'll try a short explanation: Your shaped pulse at input 3 sets FF,Q goes high starting the charging of C1 at about 13μA. Second pulse resets FF stopping charging,notQ triggers OS A closing SW B charging C2 to C1 V.,trailing edge of pulse triggers OS B, closing SW A, dumping C1. OP Amps present a high Z to caps with a gain of one.
ThanQ bernard, i got it.FF 74HC107; tie pins 1,4,8,9,10,11,13,14 to +; 7 to ground;input to 12; outputs Q=3, NOT Q =2.