| ??? 12/24/05 12:46 Read: times |
#105879 - Experts are in Christmas holidays.. Responding to: ???'s previous message |
..so you must wait for some time. Before they come back, it would be:
Better if you reframe your sentences(not demanding): Nikhil said:
but i want more details. Use punctuations: Nikhil said:
ans:use low dropout and low power regulator plz send me more details
can u help me onthis Stop Simply MesSing, everyone would be very happy to give you answers, tips and help you. This is a forum composed of many professionals, so high degree of technical and language purity is very often sought(unless you really dont know the language). As Andy has replied you in your another thread, please be very specific and clear in your questions. My reply is not to discourage you, but there are some ethics to be followed. Now I would try to answer to your question: Nikhil said:
2> in my other project which is battery operated (6V,9V,12V) but i want 5v for my ckt. my voltage regulator 7805 itself is eating 3.2mA
which is draining battery to early. What is the input voltage to 7805? How did you find that the regulator alone eating 3.2mA? Did you measure the no load input current? What is the max load current you would derive from the regulator? Did you check out the datasheet of the regulator for its quiescent power dissipation? The spec-sheets say that 6mA is nominal quiescent current, @ 25deg Celcius. If you answer by yourself that using a low dropout regulator will mitigate your problem, then why hesitating? All the very best, Vignesh |
| Topic | Author | Date |
| 2 power supply problems | 01/01/70 00:00 | |
| Experts are in Christmas holidays.. | 01/01/70 00:00 | |
| low pwr chips | 01/01/70 00:00 | |
| Improved '51 | 01/01/70 00:00 | |
| Re:low pwr chips | 01/01/70 00:00 | |
| try first | 01/01/70 00:00 | |
| LP2950CZ-5.0 is good one | 01/01/70 00:00 | |
| 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 |