Hi All,
New to the forum. I have only some hobby experience with oscillating circuits but this one is over my head.
I need an oscillator that will trigger two opto-couplers (H11D1). I need them to be triggered in the following sequence:
"opto 1 - pause - opto 2 - pause - pause"
The above sequence should be a 500 Hz cycle (1.67ms), with each pulse and pause of equal duration (approximately 0.33ms each in this case). The main point is to have opto 1 and opto 2 pulse for the same amount of time (with a slight pause between them) and a long pause between opto 2 pulses and opto 1 pulses (as noted above).
The attached image shows two options I've been working on. The first wave form would be supplied by a single oscillator while the second wave from would be supplied by two in phase 555 timers, though I have no idea how (or if its possible) to get them in phase.
Please let me know if anything is unclear as I may have not explained my goal very well, but I'll try to fill in the blanks.
One side note, I'd like to be able to adjust the frequency between 200Hz and 1000Hz, but this is not necessary. The main problem is with the oscillating circuitry.
Thanks for any help in advance.
JSmith