#garfield Logs

Nov 26 2020

09:06 AM rue_mohr: ok well I guess I'm stuck with needing 3 op-amps then
06:45 PM Tom_itx is now known as Tom_L
10:55 PM rue_shop1: making progress
10:55 PM rue_shop1: the lvdt is quite sensitive to the ramp not being right
10:55 PM rue_shop1: I have a working signal gen for it. I need to work out how to time a sample pulse
10:56 PM rue_shop1: to keep the waveform bound, I had to sync it to the voltage levels with a 555
10:56 PM rue_shop1: which means I dont have the 8x digital osc......
10:56 PM rue_shop1: unless I divide it....
10:56 PM rue_shop1: oh my
10:56 PM rue_shop1: thanks...
10:57 PM rue_mohr: or is that the fix
10:57 PM rue_mohr: maybe, I have to work out the timing of the sample pulse, maybe I can use a binary cuonter
11:02 PM rue_mohr: no your crazy, there is no way to divide the two rates, they have to be in sync
11:03 PM rue_mohr: I wonder if I had a circuit that rings about 8 cycles each pulse
11:03 PM rue_mohr: an LC might do it
11:04 PM rue_mohr: something that did about 50kHz
11:04 PM rue_mohr: I wonder if 32kHz is enough?
11:04 PM rue_mohr: how many cycles would we get?
11:04 PM rue_mohr: about 6
11:05 PM rue_mohr: we could use the wave form to hold the rest on the 4017 too