| ??? 03/08/17 07:30 Read: times |
#190759 - Experimentation Responding to: ???'s previous message |
Thanks
Adding a zener diode(s) in series with free wheeling diode makes relays de-energization faster on the expense of higher back emf voltage generated on collector of transistor which might increase noise in a shorter time. I even tried a series resistor with free wheeling diode and the higher the resistor the faster the de-energization and the transistor has to be correctly rated or it breaks down. My main source of noise was the contacts for if no load was connected to them I had no noise issues. MA. |
| Topic | Author | Date |
| Relay noise | 01/01/70 00:00 | |
| metal box | 01/01/70 00:00 | |
| not possible | 01/01/70 00:00 | |
| Are the output leads,inside the relay,... | 01/01/70 00:00 | |
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| can you .... | 01/01/70 00:00 | |
| not piggies | 01/01/70 00:00 | |
| LCD Shield | 01/01/70 00:00 | |
| no scientific base | 01/01/70 00:00 | |
| Avoid Relay noise addin a zener ! | 01/01/70 00:00 | |
| Source of noise | 01/01/70 00:00 | |
| Relay noise, add a zener with the flywheel diode | 01/01/70 00:00 | |
Experimentation | 01/01/70 00:00 |