please can someone help with a project.
The project is as follows. I have to make a spark plug spark when a trigger is pressed 450 times a min the system has to be run from a 12v battery & stop when trigger is released. what components would I need?
can someone help with a project
Re: can someone help with a project
An ignition coil and a relay, what is providing the 450 pulses? You may need an ignition amplifier to fire the 12v to the coil.
Re: can someone help with a project
Depending on how you generate a series of pulses at a frequency of 450/60 pulses/sec, it may be useful to employ one of the inexpensive car electronic ignition units that are available online. (No distributor needed, of course!)
Re: can someone help with a project
Is it possible, or even practical to pump 12AC into a coil and get a spark at 50/60hz????
Re: can someone help with a project
I don't think AC will work, AC is a constantly changing sine wave - iirc the high voltage pulse needed is create by an instantaneous drop in voltage causing a back emf.
Re: can someone help with a project
The size of the back emf pulse that Pauldf refers to is usually in the region of 300 - 400 volts. To get a suitable spark out of the coil would mean connecting the primary across the 230v mains - BUT DON'T DO IT. The coil would burn out quickly, and other damage could be considerable.
Electronic ignition systems work by charging a cap up to about 300-400 v, and then discharging that through the coil - thus mimicking the action of the short inductive spike.
What exactly are you trying to do, and where are you going to get the 450 pulses/min from?
Electronic ignition systems work by charging a cap up to about 300-400 v, and then discharging that through the coil - thus mimicking the action of the short inductive spike.
What exactly are you trying to do, and where are you going to get the 450 pulses/min from?