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  1. kellys_eye

    Help repairing car stereos: Delco 90's CD & tape player

    This issue is probably 'deeper' than the panel and ribbon cable and inside the LCD module itself where, commonly, connections to the LCD are via a soft rubberised strip (called a zebra strip). Post a pic of the LCD part (top and bottom) so we can confirm.
  2. kellys_eye

    Generating 24VAC Output (2 Amp Capability) from 36-40VDC

    Have you tried to drive the solenoids with DC? Not totally against your idea but it seems an awful lot of effort for something that's so 'basic' (powering a solenoid). AC (unless it's 'pure') is awfully troublesome with inductive loads. I'd even look at changing the solenoids for DC versions!
  3. kellys_eye

    Ancient Adeptness of Hidden Powerworks

    Change the thermostat - they are only a few $'s these days. This kinda thing : https://www.ebay.co.uk/itm/353791798505?epid=1172509269&hash=item525fa26ce9:g:LOsAAOSwU4dhp0oM Motor - isn't there a 115V supply anywhere in the room or are you 'all 220V' ? If you are just 220V then as above, get...
  4. kellys_eye

    Generating 24VAC Output (2 Amp Capability) from 36-40VDC

    Is there a really good reason why size matters? (note to Mrs k_e, not a comment directed at you dear....). There's a good reason for the KISS principle (Keep It Simple Stupid) - less cost, less trouble etc.
  5. kellys_eye

    Help repairing car stereos: Delco 90's CD & tape player

    True - laser module failure. A few years ago getting spare laser assemblies was quite easy. Here in the UK a company called CPC had a rather extensive range but they've gone right out of fashion now leaving you the second-hand market as the only route to a potential fix.
  6. kellys_eye

    Wind powered generator using radiator fan?

    Short answer - yes, but it's getting its 'energy' by the vehicle movement and you'd get more just by tapping off the alternator) or adding another). In other words, the engine fuel used to drive the fan when moving forward would be more than the energy the fan produced.
  7. kellys_eye

    Help repairing car stereos: Delco 90's CD & tape player

    There are two capstans - shiny metal poles - that holds the audio tape between and the pinch roller and only one of these should be 'closed' together at any one time depending on the tape direction. Spin the motor by hand and, with a tape inserted, ensure only ONE capstan/roller is engaged...
  8. kellys_eye

    Help repairing car stereos: Delco 90's CD & tape player

    The tape player issue will likely be one of lack of lubrication, loss of transport (rubber bands) and dirty electro-mechanical contacts. SInce many of the motions are instigated by a mechanical movement (insertion of cassette) you will have to identify the parts that move and any contacts that...
  9. kellys_eye

    Generating 24VAC Output (2 Amp Capability) from 36-40VDC

    How is the original DC source (36/40V DC) derived? It's an unusual voltage. It's possible to run AC solenoids on a DC source (12V DC for a 24V AC solenoid) when used intermittently. Seems like an awful lot of trouble to have to go to.....
  10. kellys_eye

    Generating 24VAC Output (2 Amp Capability) from 36-40VDC

    Why do you need the 24VAC supply? Is this to run a CCTV camera by any chance?
  11. kellys_eye

    4g lte frequencies calculated

    Illustrating the difficulties that were suggested! What is your purpose for building such (presumably a repeater?) I know that 3G repeaters are readily available - I have a spare, unused unit - and 4G versions do exist already (usually called 'signal boosters') and building your own would...
  12. kellys_eye

    Can some ID this component for me ? Thanks

    Diode - quite probably a zener rated at 15V and 1.3W. Need to see more of the board to confirm.
  13. kellys_eye

    Splatter in relay

    If it ain't broke, don't fix it.
  14. kellys_eye

    I Want to Create a Revolutionary Table Fan!

    With those skills you'd be far better off trying to find someone who has the design/build experience and marketing their product for them - even if you take the basic idea to them as a startiing point - for a percentage return. There will be little gain in trying to achieve the...
  15. kellys_eye

    I Want to Create a Revolutionary Table Fan!

    Get the Government to subsidise it as a Green Energy project and make a fortune from it..... even if it doesn't work.
  16. kellys_eye

    Need Help Finding Vintage Molex

    Tried forums specific to 'antique' equipment restoration? There is one in the UK called 'UK Vintage Radio' - https://www.vintage-radio.net/forum/index.php? where the membership will almost invariably either have one or know where to get one! Seriously, the guys on there are an absolute MINE of...
  17. kellys_eye

    4g lte frequencies calculated

    Designing and/or manufacturing of equipment working at such frequencies takes a LOT of input, some of it in micro-mechanics and lots of detailed simulations. Sculpting resonant circuits (oscillators, filters etc) at those frequencies requires machining (or etching) to sub-millimetre accuracy as...
  18. kellys_eye

    I Want to Create a Revolutionary Table Fan!

    Ever heard of a company called 'Dyson'? Look them up. They have $millions dedicated to research, thousands of people doing it and decades of experience - yet you expect, as an uneducated (in electronics) person with zero skills and zero funds to 'beat them to the next revolution in table...
  19. kellys_eye

    I Want to Create a Revolutionary Table Fan!

    So.... 'we' provide all the technical details, offer design ideas and, potentially, creatre a new device that you can exploit and make money from? Errrr...... no. Show us your working so far.
  20. kellys_eye

    AC Power wiring to Light Bulb

    I wasn't talking specifics, only referencing that to 'ignore' the wiring is not a pratical approach. Horses for courses etc.
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