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  1. C

    Will this switching down-regulator protect at all against short-circuits?

    No.... the point of the regulator is to supply max current (when shorted) the only protection will be when it's thermal protection kicks in reducing the current.
  2. C

    Will this switching down-regulator protect at all against short-circuits?

    A polyfuse might be another option say 500ma which will stop a dead short...
  3. C

    Will this switching down-regulator protect at all against short-circuits?

    You could add a current limiter to prevent a short like an opamp and a shunt resistor or just use the appropriate resistor ..
  4. C

    Reduce amperage without reducing voltage. Diodes? [Noob]

    Regarding diodes, transistors etc... It's important to remember that these devices have a forward voltage drop, 0.7v for a diode (or regular transistor, not darlington) So you have to deduct voltage drops before calculating the resistor value.
  5. C

    Can you stack/parallel an LM1117-3.3

    Either place low ohm resistors on the outputs or just use a pass transistor for current loading (npn power transistor)
  6. C

    I bought this at a flea market, not entirely sure what it is, help?

    Dangerous? Hook it up lol... 30mw is maybe enough tingle your skin if focused. I've been hit by 100mw lasers in the eye, sure it's not good for you and the dots are annoying but i lived, i'd hook it up and put a black bag in front of it and fire it up .. it's safer than building a 240v triac...
  7. C

    Reduce amperage without reducing voltage. Diodes? [Noob]

    Resistance is measured in ohms. Resistance is what stops your electronics melting, with exception to diodes, semiconductors, batteries what determines current is the resistance between +/- .. How much current is determined by the voltage and your voltage source.. 1v/1ohm = 1amp
  8. C

    Better than lm317?

    Besides an ldo would not help i'm referring to the 1.5v drop across a resistor in current regulation not supply 4v higher in due to the forward drop
  9. C

    Better than lm317?

    i was asking for personal experience. ... but yes i have looked
  10. C

    Has anyone experienced different colour room lighting, if so which colour did you prefer?

    I have a 10watt rgb lamp in the bedroom a 20watt blue lamp in the lounge and 20watts of red in kitchen.. Bathroom 1watt pink and 20ma uv .. ... blue i must say is nice and calming, red is dull even when pulling 2amps at 10v compared to blue.. Green, i've got but never used, i should replace...
  11. C

    Better than lm317?

    When the lm317 is in current mode, the vdrop is maintained at 1.5vish volts.. Is there a chip which has an even lower voltage drop? Sub 1v?
  12. C

    I want to build an electronic device but need help

    regardless if the led is a 5mm consuming 20ma or a 5watt LED, the 555 will do the job, just add a transistor.
  13. C

    Android Windows Remote Control

    ah but does wireshark show the udp broadcast? if it does it could be an issue android side :/ (or your router blocks it?)
  14. C

    Android Windows Remote Control

    long shot... did you by any chance restart the program after hitting broadcast, the program requires a re-run.... ? (it does not start broadcasting until it starts up)
  15. C

    Android Windows Remote Control

    it sounds like your router is not rebroadcasting like it should... there might be an option on your router that's set to drop broadcasts as a security setting... wireshark should indeed see the broadcast :(
  16. C

    Android Windows Remote Control

    regarding broadcast to 2 ip's .255 problem is you need to be on the same subnet your android is on or it wont be seen.. in the good ole days 255.255.255.255 would broadcast to everyone on every subnet :)
  17. C

    Android Windows Remote Control

    ok, well, after a typo confusing myself no end.... version 1.6 of the relay.exe now should only accept IP's from from a non VPN source properly this time. .. try this version and it should now autodetect without any issues... :-s
  18. C

    Android Windows Remote Control

    http://en.m.wikipedia.org/wiki/Private_network that'll teach me lol, if you scroll down a bit there's 4 standard assigned ip's 10. 192. etc etc i'll simply filter out non standard ip's
  19. C

    Android Windows Remote Control

    another option is to list all the IP's and the user selects one (i was aiming for ease of use....) good to know i can sort it which i will be in the next few hours but anyway thanks, invaluable feedback....
  20. C

    Android Windows Remote Control

    ok well again thanks for the help i can now go back and research into vpn's and detect not to use them and write it in! i'll get it to broadcast correctly lol
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