Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations JAE on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  • Users: DTSFA
  • Content: Threads
  • Order by date
  1. 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
  2. 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...
  3. 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...
  4. 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' ...
  5. 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 ?
  6. 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)
  7. 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 )...
  8. 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 )
  9. DTSFA

    key fob

    Hi I am after an electronic key fob control, similar too Link keypad needs to have volt free contact output, and be able to latch when fob is offered up to device ? cheers
  10. DTSFA

    why have a switch in the 0v side ?

    hi what are the advantages, if any, of inserting control switches in the negative side of control circuit? ( say you have 24v dc relay, and a control switch is inserted in the negative side of the relay ) for testing, a field control switch, I can see there may be sligth advantage, all...
  11. DTSFA

    Imo iSmart - HMI problem

    hi does anyone have experience of IMO iSmart , i have set up a HMI/text coil, to enable user to adjust a timer, when I simulate program, I can change the timer preset value, when I press 'ok' to accept the change , it reverts back to original value ? any ideas thanks
  12. DTSFA

    which PCB design package to use ?

    Hi I have a choice between Easy Pc and Cadstar Lite, please can anyone recommend which one has the edge, so to speak thanks ( I appreciate there is substantial cost difference )
  13. DTSFA

    step down transformer earth ?

    if a step down transformer, 230v/27v ac is used to feed electronics, should the secondary be earthed at one side of the secondary ? ( to help deal with surges, transients, etc ) ( obviously the 27v ac is bridge rectified on PCB to 24v dc regulated supply ) thanks
  14. DTSFA

    BCD counter

    hi i have built a multiplex circuit , 555 timer generates clock, into http://www.datasheetcatalog.org/datasheet/on_semiconductor/MC14518B-D.PDF BCD counter MC14518B-D, this BCD output feeds into a ADG406 multiplex, each 'decimal' output feeds led, LEDs clock nicely through, but, at does...
  15. DTSFA

    America 208 volts ?

    hi we have a 230v 50hz load, around 5A load. Single phase motor / pump (some electronics, controls, 24 v dc. too ) our device needs to go to show in america where i am told the supply is 208 v 60 hz is there a UK device/solution/converter, or , transformer supplier, that you can recommend to...
  16. DTSFA

    DC Motor controller

    Hi i have a requirement to control a dc actuator for a power gate application. http://uk.rs-online.com/web/p/dc-motor-controllers/5101170/ above device is close to what we require, but, ideally would like the device to reverse direction automatically, when hitting an obstruction can anyone...
  17. DTSFA

    Imo iSmart

    Hi i am using IMO iSmart plc. the ladder software, SMT v3.33 , when using monitor mode, all my comments that i written in the ladder disappear ? I think it is when I go into monitor mode, is it a case of write comments, re-save ladder at this point, then use monitor mode, ? all help...
  18. DTSFA

    Using Ferrules

    Hi can ayone advise on the use of ferrules when terminating, Apparently in EN60204 is mentions about the means of retaining conductor strands, so if we were terminating to a contactor say, would you use a ferrule to conform to EN60204 ? thanks

Part and Inventory Search

Back
Top