numpskulls
New Member
hi i'm new to this kinda thing but i need a circuit that will be normaly open and then close when the volts from my sound card dac go above 3.0 volts and stay closed till the volts drop below 3.o volts. it needs to do this very rapidly as this is the function for the laser blanking(turns laser off while the scanners are making the jump stitch) so that you dont see a line conecting letters if your image is a word.
some guys pointed me to a chip called 74hc14 wich is a schmitt trigger. it sounds like it would work but i only can figure the power pins so far.....i wouldnt know how to hook in my plus and minus from sound card dac or what to use as out put iether. i did get some results using a relay but it was tooo slow and i would have to adjust it for every image i displayed with the projector.
any help or ideas would be greatly appreciated.
thanx in advance Ω
some guys pointed me to a chip called 74hc14 wich is a schmitt trigger. it sounds like it would work but i only can figure the power pins so far.....i wouldnt know how to hook in my plus and minus from sound card dac or what to use as out put iether. i did get some results using a relay but it was tooo slow and i would have to adjust it for every image i displayed with the projector.
any help or ideas would be greatly appreciated.
thanx in advance Ω