| ??? 12/21/05 21:01 Read: times |
#105691 - Electrical sytem Responding to: ???'s previous message |
This looks like a bad battery, which became so high ohmic that the switching noise from generator cannot be sufficiently suppressed. Normally, a good and full battery is so low ohmic, that it presents a short circuit for the noise. Battery is almost new , It is a wet acid 60AH battery and about one month old.My ignition problems made me to satrt my car sometimes by a jump start from another vehicle.Once i was jump starting i connected the wires invcersely.It took about 1 minute for me to notice that.After that it took a long time for the battery to become charged again.Battery is not perorming well in maintaining the charge since then. Here is the current vehicle's electrical system schematics : 
As Steve already mentioned, charging two batteries is problematic. Can you give us a schematic, which shows the whole connections arround the two batteries? Both You and Steve are right.Today due to a short circuit i've had to remove the spare battery.Tonight when i took a ride I noticed that the no Load battery voltage raised to 14.4v and full electrical load at idle lead to 13.6 min. ! This would charge the battery much better than before.This have something to do with the Interal resistance of the lead acid comparing to the Acid battery i thought. The arrangement of the two diodes D1 and D2 shows another disadvantage: The ignition system is no longer connected directly to battery, if these diodes don't conduct. I'll have to remove those diodes ! Now i just realize what was the reason that I didn't had this much of Noise problems before! Connect a strong capacitor across D3. Become the spikes smaller then? What shows the scope directly at supply line of ignition system? There is no D3 installed currently.I just put that in a dashed box to ask is it good to place it there ! I'll have to try adding a capacitor , but it seems that I've gone the wrong way by placing these diodes there.I have to replace them with a Relay. The signal at the Coil was something like this : There was ringing after the diodes ,right at the primary coil supply pin.If my memory recals correctly it was something like this : 
Before the diodes : 
Farshid |
| Topic | Author | Date |
| What do you guess it could be ? | 01/01/70 00:00 | |
| Van Der Graaff generator? | 01/01/70 00:00 | |
| Whimshurst | 01/01/70 00:00 | |
| Gas light | 01/01/70 00:00 | |
| Sparking plug? | 01/01/70 00:00 | |
| That's it ! | 01/01/70 00:00 | |
| Very well dangerous... | 01/01/70 00:00 | |
| Condenser | 01/01/70 00:00 | |
| Electrolytic, really? | 01/01/70 00:00 | |
| RE : Electrolytic, really? | 01/01/70 00:00 | |
| Could my modifications be harmful ? | 01/01/70 00:00 | |
| Capacitors | 01/01/70 00:00 | |
| it's always in my sight ;) | 01/01/70 00:00 | |
| DCCS | 01/01/70 00:00 | |
| So | 01/01/70 00:00 | |
| Specifications | 01/01/70 00:00 | |
| dash | 01/01/70 00:00 | |
| Box and remote starting | 01/01/70 00:00 | |
| Vacuum forming | 01/01/70 00:00 | |
| Plastic Boxes | 01/01/70 00:00 | |
| potting boxes | 01/01/70 00:00 | |
| Potting Boxes? | 01/01/70 00:00 | |
| Vacuum Forming | 01/01/70 00:00 | |
| Thanks for the link | 01/01/70 00:00 | |
| Still need a nice "front" | 01/01/70 00:00 | |
| Casing... | 01/01/70 00:00 | |
| display | 01/01/70 00:00 | |
| Hidden until light up | 01/01/70 00:00 | |
| Visiting Tehran | 01/01/70 00:00 | |
| mail ? | 01/01/70 00:00 | |
| Laptop | 01/01/70 00:00 | |
| Hmm... | 01/01/70 00:00 | |
| Dash | 01/01/70 00:00 | |
| ...nor | 01/01/70 00:00 | |
| Covering is hard | 01/01/70 00:00 | |
| Battery seems to be disconnected! | 01/01/70 00:00 | |
| blocking | 01/01/70 00:00 | |
| Electrical sytem | 01/01/70 00:00 | |
| As I suspected... | 01/01/70 00:00 | |
| How to connect the second battery | 01/01/70 00:00 | |
| Err | 01/01/70 00:00 | |
| Dual battery | 01/01/70 00:00 | |
| OOOPS | 01/01/70 00:00 | |
| You could try this | 01/01/70 00:00 | |
| RE :You could try this | 01/01/70 00:00 | |
| Electrical sytem | 01/01/70 00:00 | |
| Neat trick | 01/01/70 00:00 | |
| arcing cables | 01/01/70 00:00 | |
| no way | 01/01/70 00:00 | |
| Wow ! | 01/01/70 00:00 | |
| 50,000 volts | 01/01/70 00:00 | |
| Switching techniques | 01/01/70 00:00 | |
| Per Plug ? | 01/01/70 00:00 | |
| Sort of | 01/01/70 00:00 | |
| New techniques | 01/01/70 00:00 | |
| Current techniques | 01/01/70 00:00 | |
| DC/DC Converter not dedicated coils | 01/01/70 00:00 | |
| Ferrari 348 | 01/01/70 00:00 | |
| Distributor-less | 01/01/70 00:00 | |
| Not quite | 01/01/70 00:00 | |
| Look here | 01/01/70 00:00 | |
| Coils | 01/01/70 00:00 | |
| Distributor-less | 01/01/70 00:00 | |
| Wear and tear | 01/01/70 00:00 | |
| Amazing | 01/01/70 00:00 | |
| Distributor | 01/01/70 00:00 | |
| Electrical field strengths would be huge | 01/01/70 00:00 | |
| Big 'uns. | 01/01/70 00:00 | |
| Interesting | 01/01/70 00:00 | |
Hate to think | 01/01/70 00:00 | |
| Porosity of cables | 01/01/70 00:00 | |
| corona | 01/01/70 00:00 | |
| Ah, that's the right word. | 01/01/70 00:00 |