| ??? 12/30/05 04:04 Read: times |
#106214 - i have used 3300uf storage cap Responding to: ???'s previous message |
How high is the voltage at input of 5V regulator? Do you use proper decoupling caps arround the regulator and at each chip? Do you use a PCB containing a solid ground plane?
o/p is 5.05V yes i have used 1uf and 10uf capacitors. my pcb is single layer so i cannot have solid ground plane. even on board i have 22uf capacitor. when switching the fans or load some times my system get reset also. when switching is done there is load on mains supply which cause voltage and current transients in main line with get coupled to the power supply and then to controller ckts. thank u for ur interest in such out of line topic. |
| Topic | Author | Date |
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| Improved '51 | 01/01/70 00:00 | |
| Re:low pwr chips | 01/01/70 00:00 | |
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| Answers | 01/01/70 00:00 | |
| thank u kai i am already having | 01/01/70 00:00 | |
| Further questions | 01/01/70 00:00 | |
| The often overlooked fact is that "power | 01/01/70 00:00 | |
| i have used 3300uf storage cap | 01/01/70 00:00 | |
| posts in gobbelygook | 01/01/70 00:00 | |
| i was not aware | 01/01/70 00:00 | |
| why should I try to decipher what you | 01/01/70 00:00 | |
| capacitor postions | 01/01/70 00:00 | |
you need 10-100nF directly (less | 01/01/70 00:00 | |
| It's the neglectin of solid ground plane | 01/01/70 00:00 | |
| thank you kai i will try with solid gnd | 01/01/70 00:00 | |
| Directly underneath the signal traces | 01/01/70 00:00 | |
| a suggestion | 01/01/70 00:00 | |
| Simple Switchers LM2575 | 01/01/70 00:00 |