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  1. kellys_eye

    Newbie - attempting to repair Ford circuit board

    Yes, in-situ meaning 'still mounted on the board'. For a definitive test you need to remove one of the component wires. Capacitors (non-electrolytic anyway) tend to be very reliable - automotive class even more so. You can test the electrolytic (big blue one), the diode, resistors and...
  2. kellys_eye

    Newbie - attempting to repair Ford circuit board

    I presume you measured the capacitors 'in-situ'? In which case the measurement readings may well be affected by external wiring/components. What actual fault symptoms do you see?
  3. kellys_eye

    Video recorder

    https://www.electronicspoint.com/threads/help-i-have-a-fault-read-me-first.221134/
  4. kellys_eye

    What do you call something...

    Plastic. Wood. Fibre glass. Phenolic resin board. 'anything' - as long as it's stiff, non-conductive.
  5. kellys_eye

    Momentary switch, play audio clip?

    Google "MP3 Playback Module" - there are a gazllion versions but each has their interface requirements although there are some that will playback via a single button - most will need a separate amplifier too.
  6. kellys_eye

    Yamaha RX-V 657 comes on then goes off

    Is there a dual voltage setting (120/240)?
  7. kellys_eye

    Yamaha RX-V 657 comes on then goes off

    So the units working then? or are you quoting this wrongly?
  8. kellys_eye

    Gcse project NEED HELP

    Whilst I agree that the OP's project is 'simple' there's no need to be so dismissive of the effort - it may be part of an introduction to components for all we know.
  9. kellys_eye

    Can I tap into an existing 5v to power my own project?

    I shouldn't think an additional 20mA (LED) would do any harm. No PSU I know of is THAT power critical!
  10. kellys_eye

    Can someone explain to me how this circuit works?

    The resistor is a simple 'dropper' to limit the current to the LED and wired across the two main terminals. The capacitor seems to be wired in series with SW1 and whole arrangement is across the two main connecting terminals. SW2 is straight across the two connecting terminals. Basically THREE...
  11. kellys_eye

    Can I tap into an existing 5v to power my own project?

    Depends on the power rating of the supply and how much extra you intend to draw from it. If your circuit doesn't cause the existing power supply to overload then there's no reason why you can't use it.
  12. kellys_eye

    Gcse project NEED HELP

    Check out the forward voltage of the LEDs - the 'typical' value is relevant. Your three batteries can only deliver a maximum of 4.5V. What does this mean about connecting an LED (or string of LEDs) to the battery? Will you be wiring them in parallel or series? You will need to limit the...
  13. kellys_eye

    Wireless Digital Bi-directional Voltage Current Power Meter Ammeter Voltmeter

    Those modules tend to use 'standard' interface IC's - like the INA219 for example - so if you can identify the device being used to measure the current you can get the datasheet for it and there may (usually is) find an application schematic that will closely follow the manufactured design...
  14. kellys_eye

    Backup battery charging

    If you don't expect to get outages more often than every 2 days - or intend to run the batteries to their point of total emptiness - then that charger will do (it would take 40 hours to recharge them from flat).
  15. kellys_eye

    Stalling generator

    A 6.5kVA generator should power a 1700W saw no problems. Check the throttle regulator - possible vacuum leak.
  16. kellys_eye

    Panasonic rf 562d or rf 3500

    :rolleyes: I was expecting some hi-end hi-fi or similar - not a pair of 'crappy' portable radios. You'd be hard pressed (and very sad) to find any difference between them.
  17. kellys_eye

    Panasonic rf 562d or rf 3500

    What do the specifications say?
  18. kellys_eye

    Electrolytic or Tantalum ?

    Space shouldn't be an issue these days given the smaller packaged devices you can get - SMD if you're really pushed. Tantalums would normally be used for timing accuracy purposes or areas where low ESR was a particular requirement. Their 'historical' issues surrounding 'explosions' etc don't...
  19. kellys_eye

    Wireless Digital Bi-directional Voltage Current Power Meter Ammeter Voltmeter

    The transmitter will use a digital modulation method and the 'code' used will be according to the programming of the controlling processor so unless you can disassemble the program you won't get much information on 'how' the device works. But the transmitter itself will consume current...
  20. kellys_eye

    Power won’t turn on

    Changed the batteries?
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