| ??? 11/28/05 14:12 Read: times |
#104263 - magnetic pick up tachometers experiences Responding to: ???'s previous message |
You will need to have an amplifier at the pick up to make the signal less likely to pick up noise. I used an "amplified" magnetic pick up and someone talked me into trying a non-amplified. Quoting a song "just one look was all it took. After 1/2 hour the non-amplified pick-up was replaced and returned. If you want to make it "industrial strength" let the tacho amplifier have differential outputs and feed them to a differential input receiver easily accomplished using RS482 chips. I have to stress that I am not suggesting using the chips to transfer 8 or 9 bit codes, just feed the pulses.
Debouncing, as suggested, does not do much when you can not delay for more than a few microseconds. Erik |
| Topic | Author | Date |
| C2051 & Magnetic pulse generator | 01/01/70 00:00 | |
| either i or o | 01/01/70 00:00 | |
| hmmm..but | 01/01/70 00:00 | |
| Debug suggestions | 01/01/70 00:00 | |
| Software Debounce | 01/01/70 00:00 | |
| magnetic pick up tachometers experiences | 01/01/70 00:00 | |
| RE: magnetic pickup tachometer | 01/01/70 00:00 | |
| RS482 - Typo? | 01/01/70 00:00 | |
| darn thumbs | 01/01/70 00:00 | |
| This could be the reason... | 01/01/70 00:00 | |
| bufer amp | 01/01/70 00:00 | |
| why the UG? | 01/01/70 00:00 | |
| pc scopes | 01/01/70 00:00 | |
| could you | 01/01/70 00:00 | |
| What tells the oscilloscope? | 01/01/70 00:00 | |
| Build simple test tools to fix your unit | 01/01/70 00:00 | |
| Excessive rise times during startup? | 01/01/70 00:00 | |
| Good, but even better would be | 01/01/70 00:00 | |
| Full story | 01/01/70 00:00 | |
| thanks, so can I... | 01/01/70 00:00 | |
| yes, if and only if the channel A | 01/01/70 00:00 | |
| cheerz | 01/01/70 00:00 | |
| Time bomb.. | 01/01/70 00:00 | |
| Perhaps a little explanation? | 01/01/70 00:00 | |
| setting the hysteresis | 01/01/70 00:00 | |
Thank, Erik! | 01/01/70 00:00 |