townsvillian
New Member
Hi I need a circuit diagram to make a square wave module for a project
Can anyone help me.
Thanks
Can anyone help me.
Thanks
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555 connected to an h-bridge with a 1:2 transformer on the output.townsvillian said:The voltage I require is 12v in and 24v 50Hz out.
It is to trigger solinoids which require 8VA each. I have up to 24 Solinoids but I expect that no more that 6 would be on at anyone time.
townsvillian said:The voltage I require is 12v in and 24v 50Hz out.
It is to trigger solinoids which require 8VA each. I have up to 24 Solinoids but I expect that no more that 6 would be on at anyone time.
drivemusicnow said:I need to create a square wave with a variable frequency. I originally tried to do this with a MC4558 op amp, however I ran into stability problems. Then I picked up a dual 555 timer and can't seem to get near the adjustment range I need.
Specs:
~10V input
Frequency range of between ~0-1200hz, linear response preferred
Needs to be stable, and protected from a signal failure.
Adjustable through the use of a potentiometer (we currently have 0-100k ohm pots)
Any ideas?
drivemusicnow said:True 0 hz isn't required. We are trying to create a fake speed sensor that at 0 Hz is 0 RPM, and is 16 pulses per rotation. Therefore really "close to 0" is all we need.
With the 555 we can only get an adjustment range between 115hz and 125hz (or a factor of that by using a different sized capacitor).
What microcontroller would you use and how would I set up the circuit?