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  1. Den123

    Unsurpassed Сasual Dating - True Females

    Free girlfriend? They all cost money in the end.
  2. Den123

    Hypex order

    Thank you for your kind offer. Never heard of them. Checked out their website. Nice stuff indeed. Class D? Me? Nah….I’m to old.
  3. Den123

    NOS Maxell/BASF Reel Tapes

    I’m interested pls.
  4. Den123

    How much do cables matter?

    Agreed, ChrisC. I think a little knowledge is not always a good thing....
  5. Den123

    How much do cables matter?

    Hi Sailor I need a bit of help here...I have studied electronics in the '80s and have been in the industry all my life, but battle to understand something here: How does a 75ohm characteristic impedance RCA connector even come close to being relevant in an audio system? I ask this with some...
  6. Den123

    Inverter blending power is upsetting the Smeg Hob

    Get someone with harmonic capabilities to measure the input Thd of the Current, especially when charging. Only when you know what you are dealing with, can a solution be found.
  7. Den123

    Inverter blending power is upsetting the Smeg Hob

    Nope! The EMI filter works on much higher frequencies - totally different function. It may assist a bit, but it's not ideal. An harmonic filter would be the best on the converter input, usually a choke will suffice. Without getting toooooo technical, a lot of the modern inverters can export...
  8. Den123

    Inverter blending power is upsetting the Smeg Hob

    The inverter is distorting the current waveform on the input of the inverter while charging the battery. This is upsetting the quality of the supply to the devices connected BEFORE the inverter. Possibly distortion of the voltage is occurring because of the distortion of the current multiplied...
  9. Den123

    Inverter blending power is upsetting the Smeg Hob

    If the inverter is the cause of the problem, then it is technically better to sort the inverter out than to protect the hob only. The interference will have an effect on all your equipment, PCs, UPS's, Hi-Fi etc. For a quick fix you can try the metal-clad EMI filter as suggested above. It can't...
  10. Den123

    Inverter blending power is upsetting the Smeg Hob

    Harmonics and EMI/RFI are frequently misunderstood and "bundled" together in that misunderstanding. RFI is high frequency generated by (typically) the output stage, switching in the kHz region. The cables on the output radiate that energy like a radio transmitter. Harmonics on the other hand...
  11. Den123

    Inverter blending power is upsetting the Smeg Hob

    Check that your neutrals are properly separated. Thereafter, if the condition persists, it is most likely one of two things: 1.) Harmonic currents generated by the input of the inverter 2.) RFI generated by the 15 or 20kHz modulation frequency on the inverter output. If it is either of these...
  12. Den123

    How about wind power

    There is one in our neighborhood. I frequently look at it and wonder...it almost always seems to be standing still. IMO, not a good investment. And yes, the noise is an issue, especially at night.
  13. Den123

    How many panels - question for experienced users

    That 41V rating seems low. You need to watch out for the open circuit voltage (Voc). This value is approached as the load is reduced (as in fully charged batteries). Most panels are about 50V oc these days. I would check this before putting any more panels in series. I have already experienced...
  14. Den123

    Drawing from the Grid even when generating adequate power

    With my inverters, I can choose which power to use first. So, when there was no load shedding, I would prioritize solar first, then batteries, then utility power. I was paying the utility almost nothing, one or two units a day (down from 40 per day). Now, with the constantly changing load...
  15. Den123

    Blue Nova Battery not discharging below 25%

    I cannot tell you how tired I am of "firmware" updates and excuses. It seems nothing works for very long, or delivers the performance clearly printed on the box, without new firmware!!!!! When I was writing PLC and SCADA code for industry, I understood every line. It delivered as promised. I...
  16. Den123

    Franschhoek Bang & Olufsen installation

    Very nice indeed.
  17. Den123

    Kwikot Econocoil Geyser Element

    Seanjammy, I’m afraid Leon hit the nail on the head. That is what a resistive element does. It loses heat. It is 100% efficient at that. No noise, light, movement, etc. Energy is energy. Even a heat pump, same rules apply. Of course, the COP is greater than three but think carefully: You are not...
  18. Den123

    Kwikot Econocoil Geyser Element

    Hmmm. Unless the coefficient of performance is greater than 1.00, then the physics rules apply. It takes a certain amount of energy to heat a given volume of water through x number of degrees. Fact! A lower power element will take longer to heat the water but will consume the same amount of...
  19. Den123

    Mars Performer

    Very nice looking amps Karel.
  20. Den123

    Blast from the past: LM Radio

    Can we go back to the zBothas Batterproof Bakkie recording. I remember that well. What a laugh.
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