| ??? 05/11/05 18:42 Read: times |
#93325 - yes Responding to: ???'s previous message |
both the coils are at the point where 12v enter the board are they dangerous here too
yes. No coil should ever come between ANY cap and ground. If the 12V is AC pre rectifier bridge, they probably do not hurt (whether they do any good in that case, I do not know), but if they are after a reservoir cap the ground one is bad. The only location for "differential noise suppression coils" I know of that actually works is where the 110/220VAC enter. Erik |
| Topic | Author | Date |
| noise comparison | 01/01/70 00:00 | |
| apples and oranges | 01/01/70 00:00 | |
| decoupling | 01/01/70 00:00 | |
| possibly | 01/01/70 00:00 | |
| directly soldered | 01/01/70 00:00 | |
| 10nF | 01/01/70 00:00 | |
| and get ceramic | 01/01/70 00:00 | |
| FFT | 01/01/70 00:00 | |
| no analog part | 01/01/70 00:00 | |
| when extreme DIP is a no-no | 01/01/70 00:00 | |
| thats right | 01/01/70 00:00 | |
| long internal wires | 01/01/70 00:00 | |
| what why less in pic | 01/01/70 00:00 | |
| Identical ? | 01/01/70 00:00 | |
| any reason you like | 01/01/70 00:00 | |
| thats valuable | 01/01/70 00:00 | |
| nope | 01/01/70 00:00 | |
| but if | 01/01/70 00:00 | |
| regardless of how you do it | 01/01/70 00:00 | |
| have any body got zero level | 01/01/70 00:00 | |
| Philosophically .... | 01/01/70 00:00 | |
| how to post jpg | 01/01/70 00:00 | |
| Posting Images. | 01/01/70 00:00 | |
| how to post | 01/01/70 00:00 | |
| "Print" formats ? | 01/01/70 00:00 | |
| screen grab | 01/01/70 00:00 | |
| What you see isn't just 'ground noise'! | 01/01/70 00:00 | |
| here is layout steve | 01/01/70 00:00 | |
| What is it???? Too few details>>>> | 01/01/70 00:00 | |
| sufficient | 01/01/70 00:00 | |
| Re: Suffiecient. | 01/01/70 00:00 | |
| Are the Xtal burden caps really.... | 01/01/70 00:00 | |
| let me explain | 01/01/70 00:00 | |
| never coils in power return | 01/01/70 00:00 | |
| but they are | 01/01/70 00:00 | |
| yes | 01/01/70 00:00 | |
| ApplesandOranges, | 01/01/70 00:00 | |
| ok steve | 01/01/70 00:00 | |
| Read and inwardly digest | 01/01/70 00:00 | |
ok i will don with diff. | 01/01/70 00:00 | |
| also | 01/01/70 00:00 |