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  1. Sunnysky

    Help with Alternating 12 volt DC Headlight flasher "WIGWAG"

    As indicators, dual Xenon flash is best with small dual HV supply and capacitor discharge and remote controlled timer relay for 10km visibility on wing tips. EMI must be controlled well as these are noisy. Otherwise 2cm 100W LED array can be just as effective with 200W short pulses but only...
  2. Sunnysky

    Race Car Headlight Flasher

    Are hi and low beam separate outputs? One possibility - interfaces at each lamp socket with same waterproof male female connectors , unless a common interface to both is available. ( need diagrams) otherwise duplication is required. - a bypas relay , normally closed for redundancy to interior...
  3. Sunnysky

    Multiple message voice chips

    1) Yes 2) yes ChipCorder chips are common and inexpensive with a selector switch. But to add a random selector logic will need a microcontroller with custom firmware. Development cost is high with 1 prototype. I have a mobile phone size board that only does a few short songs AND uses a rotary...
  4. Sunnysky

    Onboard charger repair. Value of ZD?

    Well if you are near Toronto...
  5. Sunnysky

    Onboard charger repair. Value of ZD?

    GOld means 5% Silver means /100 It is 0.29 Ω http://www.michaels-electronics-lessons.com/index.html
  6. Sunnysky

    Race Car Headlight Flasher

    Could you please make precise specifications? for all inputs and output response? This includes time durations, on, off , sequence etc., options? peak Current, etc. or spec headlight.
  7. Sunnysky

    Race Car Headlight Flasher

    I see... Please note that the regulations for the G40 Junior Cup will be very closely controlled and we would strongly advise that you consult Ginetta before making any alterations to the car, no matter how small they may be. The regulations will focus primarily upon maintaining the original...
  8. Sunnysky

    Race Car Headlight Flasher

    A 3 way switch is needed for your scenario; user selected; Flash ON and Flash OFF Considering your experience, I think adding custom LED's can be much brighter indicators than the headlamp. You don't need to light up his car, just make the led indicators much brighter than your headlamps. When...
  9. Sunnysky

    Electronics Mortuary

    Devil's advocate turn.... Your honour, We contend the evidence submitted also supports our contention that this witness is part of a subversive terrorism plot to expire the end-user. A ticking time bomb , if you will. The MSDS sheets indicate that although safe in their solid form, once...
  10. Sunnysky

    TEC modules (body heat) powered charger

    Body heat? not likely to work with low temperature differential.
  11. Sunnysky

    What component is this?

    What designation in silk screen for this part? It is some kind of circuit protection in series. NTC or PTC ( more likely ) aka ICL or resettable fuse 2 Ω 120V best guess http://www.digikey.com/product-detail/en/amphenol-advanced-sensors/YQD120N0006/235-1268-ND/2324592 Why?
  12. Sunnysky

    Small project help

    You need to find out the specs on LED voltage to choose battery.
  13. Sunnysky

    Race Car Headlight Flasher

    it would be easy to add a 50W 12V LED array with an LDO and blinker driver too. MUCH Faster response than halogen.
  14. Sunnysky

    Amp In Protection Mode

    from a long time ago
  15. Sunnysky

    Race Car Headlight Flasher

    It could be done with a couple logic chips and HIside automotive driver, but it will reduce your std high beam headlamp,life. But Ok for LED headlamp.
  16. Sunnysky

    LED or CFL flickering with motion sensor in circuit

    LEDs with constant current SMPS will work while PWM types are more common in low power lamps would flicker.
  17. Sunnysky

    Which chip used to optimize measuring many batteries.ject

    if you can design a PCB with the SMT relays, it can be quite reasonable with "stacked" RJ-45 jacks normally used for Ethernet with 8 wires each , neater and cost effective to route 9 inexpensive pre-made cables to resistor connections to 4 batteries each. The resistors would charge the MUX...
  18. Sunnysky

    Trying to connect old computer suround sound speakers to a modern LCD T.V

    there is aging affect that doubles every 10'C rise, and inexpensive caps are usually the first to go. It should never feel hot. If I leave my iPad in the sun it tells me and shuts down for the the sake of the batteries mainly.
  19. Sunnysky

    Household electronics epidemic failures

    My garden LEDs also included some surplus stripleds wrapped around the grounded antenna mast. Tthe LEDs' power supply was floating, so I guess that wasn't a good idea.
  20. Sunnysky

    Power Supply Died

    I would suggest the supply is loaded too much for long term reliability Nichrome cold resistance is probably a lot less than 11.3A which means the surge current on startup depends how it is done but will exceed the power ratings and stress all the high current parts until the nichrome heats...
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