| ??? 12/01/06 14:47 Read: times |
#128840 - Hardly Responding to: ???'s previous message |
Ap said:
Are chargable battries noisy??? No, they aren't. Their impedance is rather low and leads to a lower wide band noise than a regulator. Infact, batteries are the best supplies for ultra low signal amplifiers, because of their low noise. But when a chargable battery becomes old, this resistance can increase and current spikes drawn from the circuitry can cause unsane voltage drops! That's why batteries should always be decoupled with about 100µF aluminium electrolytic. Check the integrity of supply voltage by the help of scope. Can you publish a schematic of your charging scheme? Kai |
| Topic | Author | Date |
| Battery mcu noise | 01/01/70 00:00 | |
| have you tried extra decoupling such as | 01/01/70 00:00 | |
| decoupling | 01/01/70 00:00 | |
| The point is some inductance. | 01/01/70 00:00 | |
| Ohmic losses | 01/01/70 00:00 | |
| Are chargable battries too noisy? | 01/01/70 00:00 | |
| Hardly | 01/01/70 00:00 | |
| Noisey rechargable batteries? | 01/01/70 00:00 | |
| charger is very simple | 01/01/70 00:00 | |
| that is too scary | 01/01/70 00:00 | |
| Here it comes | 01/01/70 00:00 | |
| Do you want to say... | 01/01/70 00:00 | |
Do you want to say | 01/01/70 00:00 |