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  • Users: DTSFA
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  1. DTSFA

    LCD Bezel

    cheers VE1 I did in fact buy some of those from hobbytronics, cut and stitched x3 together around cutout in box, was not pleased with result, I did email Powertip, the manufacturer, no response, will have to improvise some other way, as you say, is rather nuts, seeing how well used these...
  2. DTSFA

    16x2 LCD display - issue ?

    thanks for reply guys, was in fact a memory issue with the PIC,
  3. DTSFA

    LCD Bezel

    I am after a suitable bezel, for a Powertip 1602-L display dims = 99x24 mm can anyone recommend suitable supplier (preferably in UK ) (I have 'googled' extensively !) TIA
  4. DTSFA

    normally open switch - monitoring ?

    to help this discussion i have attached snapshot of the circuit, you can see the x2 switches marked as 'override'. Link the dc current flows from left to right in pic the ovveride normally open is only actuated (whether plunger or reed), for small amount of time, say around 3s. the two...
  5. DTSFA

    normally open switch - monitoring ?

    I have a normally open switch that temporarily shorts out part of a control circuit for machine to continue operation, from a safety perspective I wish to monitor this switch in case it 'welds shut' volts = 24v dc current = 1A max one switch is reed type, other is plunger type Link...
  6. DTSFA

    16x2 LCD display - issue ?

    I am using a 16f877 PIC to drive a 16x2 LCD, if I run the code to where the lift checks if between floors , all is good, if I run code to end , at the start, I get what looks like a 'y' in the display, and rest of code seems to output weird characters, behave illogically sbit LCD_RS at...
  7. DTSFA

    override switch

    thanks for replies so far, the safety circuit is using normally closed devices, the overrride is currently normally open, (is required because at certain point of operation, the safety circuits has to be overriden for the machine to continue to operate) think this is good, think the wording...
  8. DTSFA

    override switch

    if one is using an override switch (overides control/safety switch) , and a standard calls for that override switch to have 'positive separation' for such a switch, and currently the switched used to override part of the circuit is normally open, how would one achieve the 'positive separation' ...
  9. DTSFA

    frequency converter ?

    DRWeig thanks again will take a look,
  10. DTSFA

    frequency converter ?

    I am in need of a 240v 50hz to 240v 60hz converter, capable of handling loads to 10A please can anyone suggest any suitable supplies ?
  11. DTSFA

    UL transformer?

    DRWeig thanks, you have been very helpful, and I now fully understand looks like in our case will be subject to full down stream testing, do not think we can get our control cicrcuit below or equal to 100VA
  12. DTSFA

    UL transformer?

    DRWeig thanks so it still must be less than 100VA? ( even if it is a regulated secondary output ) Link
  13. DTSFA

    UL transformer?

    DRWeig & jraef, thanks for your helpful answers, 27V ac is a bit strange I agree, it feeds into one of our bespoke PCB control boards, where, it is rectified for 24v DC. I can only guess that the original designer wanted to bump up the output from tx to account for volt drop. ( as the cable...
  14. DTSFA

    UL transformer?

    I am after a UL approved Class 2 transformer (UL 5085-3) 240 v primary 27 v out (could make do with 24v out) 200VA please can you suggest any potential suppliers ? ( preferably in Europe)
  15. DTSFA

    strange behaviour in PLC

    hi i have a PLC where the inputs appear stable, but, the internal memory coils appear to be operating erratically ? causing the output relay to operate in chatter mode for period of time, then no output at all, until PLC is re-booted. ( the PLC hardware has been changed, no improvement )...
  16. DTSFA

    Crimp terminal

    mcgyvr thanks for idea, looks possible to use that in our case also will try the bending of crimp cheers
  17. DTSFA

    key fob

    SceneryDriver thanks for link, need to have more compact device in this instance, and cost is factor too cheers
  18. DTSFA

    Crimp terminal

    emmm, that crossed my mind, only thing is, weakening the crimp by doing this ?
  19. DTSFA

    Crimp terminal

    hi does anyone know of a crimp terminal that exists, that is at 90 degrees to the spade. so th cable would be at right angle to the spade part ( if that makes sense )
  20. DTSFA

    key fob

    thanks for link, will check out

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