- INVERTER BLUES - 2 Updates
- Looking for component test clips - 2 Updates
| avagadro7@gmail.com: Oct 16 05:17PM -0700 I asked about inverter's power consumption apart from power feed to output and losses in this operation. However, observation n trials from Grambling to Tallahassee suggest the problem is rpm/output in the alternator. The Ctek's need brought forward then back to the inverter at rear cargo. The inverter is back there as the unit produces noise in the stereo amp located forward. Splicing a 10 or 8 G AC power line into a 2 outlet box….there are 2 Cteks with output wires at ? 12 G ? Solves the auxiliary battery charging problem where I can press ON upfront when engine speed is at 2000 rpm. Powerstreams calculator suggests a 13V plus output over a 17 foot 8 G wire delivers more than 12V to the inverter. The draw back to the front ….with 8 G the drop is 119.850 from ? 120V I am permanently confused on dealing with 12V vs what is 13V + in auto applications. Of course, I will find Cteks produce teeth gnashing noise in the stereo amp. The lights are similar. Headlamp light bulbs are now way too powerful for Ford wiring. A relay system is already wired for direct to battery power ready for installation. A fail safe circuit is needed. There is a Ford battery saver relay dimming the extra power bulbs until the battery is fully charged…apparently taking abt 15 minutes at 2000 rpm. Headlamps on Ford wiring can be relay dimmed while the single center bumper mounted spot lamp is standard bright wired direct to battery. Hi beam filament requires a 5 minutes warmup time. The inverter does need a heavier ground wire connection. http://www.powerstream.com/tech.html |
| "pfjw@aol.com" <pfjw@aol.com>: Oct 17 06:09AM -0700 Let's start over: Alternator Rating: Typically taken at 6,000 rpm. The typical step-up ratio from the drive-shaft pulley to the alternator pulley is about 3:1. So, if your engine is running at 2,000 rpm, steady state, you are getting the full alternator output. At 2,500 rpm, you are getting no more actual power from the alternator as this is limited by the size of the system. http://jgdarden.com/batteryfaq/Balmar2.jpg Rating vs. Real World: About 90%, with diode losses. Inverter Output: No better than 90% of input, to the maximum *STEADY STATE* rating of the inverter. Charger Losses: About 15% of input up to the maximum output rating of the charger. Load: The total load on the alternator including all items. In the typical automotive application, this includes: Lights, computer, ignition, sensors, peripherals such as heater fans, AC, heated seats, information and entertainment, and much more. http://ecomodder.com/forum/showthread.php/list-typical-electrical-loads-modern-car-7196.html For round figures, use 4,700 watts (391 amps). Of which about half are momentary loads such as power windows and the like. About another 20% are temporary, such as heated seats, heated rear window and fog lights. So, for round figures, you are generally running at a sustained load of 150 amps +/-. Leaving about 30 - 35 amps available for 'the rest of your load'. And your 'additional developed load" is about 45 amps, or so. Modern automotive electrical systems have vanishingly little resilience these days. And why vehicles with a "trailer package" not only have heavy duty cooling systems, heavier brakes, heavier suspension and such, but also much heavier electrical systems. You might solve your problems with a 400A alternator, should it fit. It still would help to know the inverter rating. Really! Peter Wieck Melrose Park, PA |
| Dave M <dgminala at mediacombb dot net>: Oct 16 12:07PM -0500 OK, I found what I'm looking for. Someone mentioned that the solderless breadboards use that type of clips. I found one in a drawer of old odds-n-ends, took it apart and there they were!! There are a handful of them in one of the breadboards; more than I need, but now I know where to find more if I need them. Thanks for the suggestion. Dave M On Thu, 6 Oct 2016 19:52:10 -0500, "Dave M" <dgminala@mediacombb.net> wrote: |
| "P E Schoen" <paul@pstech-inc.com>: Oct 16 08:49PM -0400 "Dave M" wrote in message news:2ic70ch2ocigaomlpbo3mlm5jojbnuber5@4ax.com... > them in one of the breadboards; more than I need, but now I know where to > find more if I need them. > Thanks for the suggestion. You're welcome! Paul |
| You received this digest because you're subscribed to updates for this group. You can change your settings on the group membership page. To unsubscribe from this group and stop receiving emails from it send an email to sci.electronics.repair+unsubscribe@googlegroups.com. |
No Response to "Digest for sci.electronics.repair@googlegroups.com - 4 updates in 2 topics"
Post a Comment