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  1. george_tlc

    Renogy 50amp DCDC w/ MPPT - Chassis Ground?

    ^ you have to look closely at say an 80 series (others are similar) and you will find there are NO ground straps to the chassis. It is not part of the ground circuit in any way. The 80 (as the example) has a big ground connection from battery to block and that IS the path that the starter...
  2. george_tlc

    Anybody knows about electronic loads?

    I'm sure there's a limit, don't know offhand what it is. Something to verify in the product's documention/spec. Fancier units that gave scpi may have pretty fancy capabilities... cheers, george.
  3. george_tlc

    Anybody knows about electronic loads?

    1 second was just an example. The fastest is 0.1 sec per change :) cheers, george.
  4. george_tlc

    Anybody knows about electronic loads?

    You can program steps in the various modes. Below shows Constant Resistance and changing the resistance values every second. It will log current, voltage, power etc so you can get curves. You can save the data and then pull it into excel for instance and do more with it. I'm sure most...
  5. george_tlc

    Anybody knows about electronic loads?

    I have and use a Manyuo electronic load. It's well proven and there's a few similar units out there. Fairly old school in terms on 'UI', but it works just fine. I've used for a bunch of years. Mostly as an electronic load for LED driver testing and also for smaller battery runtime tests. They...
  6. george_tlc

    Renogy 50amp DCDC w/ MPPT - Chassis Ground?

    ^ Agreed, misinformation in a thread that people will refer to is not a good thing. Landlocked93 clearly doesn't understand the distinction between a poor ground path and an ENGINEERED one by Toyota etc. He doesent understand how the body mounts to the frame and at what places there's a...
  7. george_tlc

    Renogy 50amp DCDC w/ MPPT - Chassis Ground?

    Sorry, but no. The frame is not a ground path. It may connect to the ground system via bearings, springs etc, but it is NOT intended to carry current. Again, there is no point where Toyota uses the frame to carry current. Current is carried from the battery to the block for high current and to...
  8. george_tlc

    Renogy 50amp DCDC w/ MPPT - Chassis Ground?

    Yes, and tailshaft and bearings to axle etc. The point is that ground is via engine and body. Frame/chassis may have indirect grounding, but is not used as a ground path. I've got a pretty good grasp of ground loops - my EE work ensures I understand that along with circuit design and board...
  9. george_tlc

    Renogy 50amp DCDC w/ MPPT - Chassis Ground?

    ^ Yes, manifold/engine/body etc. NOT the frame/chassis. Manifold is 'part' of the engine - it's bolted to it as is the exhaust system. Essentially the entire engine/transmission/transfer box/body are suspended on rubber from the frame/chassis. So, if you want a good ground you need to connect...
  10. george_tlc

    Renogy 50amp DCDC w/ MPPT - Chassis Ground?

    ^ The alternator and starter are grounded to the engine block. The ground straps from the block go to the body. The battery grounds (2 of them), one thick goes to the engine block - that is THE high current ground for the alternator and the starter, one thin goes to the body/fender. The vehicle...
  11. george_tlc

    Renogy 50amp DCDC w/ MPPT - Chassis Ground?

    The chassis/frame is not really a good ground 'path'. Consider that the entire body and engine and transmission are rubber mounted... Look at how Toyota has done the grounding. The major ground for the starter is via the engine block, the starter/alternator are grounded via bolts to the engine...
  12. george_tlc

    Help with Anderson plugs

    Look at the contacts on the grey connector, look at the ones on the red connector. The red has them upside down. The bump on the contact should NOT be facing towards the surface of the mating contact. 'tis obvious if you look closely. cheers, george.
  13. george_tlc

    Help with Anderson plugs

    Will write it again, the contacts are in 180 degrees off. The sloping down part of the contact should face UP to mate to the slope part of the contact of the other half. It's pretty obvious if you compare the structure/slope of the pins in the red connector pics with the ones in the grey...
  14. george_tlc

    Help with Anderson plugs

    Looks like you have the 'pins' in 180 degrees wrong. Look carefully at your RED connector pictures and the 'pins' and compare to the grey connector pins. cheers, george.
  15. george_tlc

    Help with AirCon, Cooking, and Solar please!

    https://forum.ih8mud.com/threads/1hz-vacuum.103354/ cheers, george.
  16. george_tlc

    Help with AirCon, Cooking, and Solar please!

    It won't be an "oil pump", it is a vacuum pump for the power assist brakes since with diesels there isn't sufficient vacuum available like in a petrol engine.. The oil lines are just for the engine oil being used as a lubricant for the vacuum pump. The pump uses the alternator's shaft to get its...
  17. george_tlc

    Know about USB power delivery and weird AC?

    Yep, not surprised. Many offline switchers will have an X or Y rated capacitor from the mains side (behind the high voltage bridge) across the 'transformer' to the ground DC side. It's part of the safety path and likely trips up the Klein style tester. Time to look for another windmill to...
  18. george_tlc

    Know about USB power delivery and weird AC?

    PD will have a switching supply to provide the various DC voltages that PD supports. Switching supplies are typically quite RF noisy. A cable will be a great antenna, both to receive and to radiate. I wouldn't be overly concerned. You could try the Klein around other USB cables - if you have...
  19. george_tlc

    Using IR to find bad connections

    Thermal imaging sensor. Heat is long IR and not the type of IR that comes from IR LEDs etc. FLIR is one manufacturer of thermal camera technology. It's not cheap technology, but if one can afford/justify a thermal camera, they really are incredibly useful for fault finding and general...
  20. george_tlc

    High quality 12v to USB-C adapter

    US designed by coolgear. I have one and the circuitry is top quality components and assembly. The product is also available without the housing. cheers, george.
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