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 MintJulep 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: *

  1. Paddymagee

    Outdoor LEDs

    Hi, I note with intrest the number of petrol stations changing over to LED pricing displays. What intrests me is the excellent readability of the displays, not only can you see them from 200m+ but they are viwable at narrow angles (until you are almost side on to the sign) Does anyone know...
  2. Paddymagee

    Ferrite Beads

    Sorry I was unclear - the "supplier" is the producer of the equipment that we are fitting the supply to. Although we have had no problems apparently other distributers have found a problen and these beads sort it out. We have not yet bought or fitted any ferrites. Thanks for the advice on how...
  3. Paddymagee

    Ferrite Beads

    Hi, I have just received a "product update" from a supplier advising that we fit the ferrite beads (see link) to the supply of control PCBs. http://www.kemtron.co.uk/buyferrites.html We have to fit 3 in total, L,N & Earth by loping the cable a single time through the bead. My guess is...
  4. Paddymagee

    Sourcing Electromechanical Dot Matrix Displays

    Does anyone have any pointers where I could buy display modules similar to that seem above motorways and highways? They are the the type with a matrix of yellow dots which flip round on an electromagnet to give a character display. Thanks in advance.
  5. Paddymagee

    Ultrasonic Distance Measurement

    Im looking at a system to detect the distance between a crane and a steel girder(the overhead crane type as seen in factories). The idea is to sound a warning when the crane reaches a certain distance from the wall. I think the best type of sensor to use is an ultrasonic type (but im open to...
  6. Paddymagee

    Deep cycle batteries connected in parallel

    If you must go this way then be sure to (1) Replace both batteries together even if only one is "dead" (2) chaeck that your alternator / charger can cope with double the load when charging.
  7. Paddymagee

    48 VAC - 24 VDC Power Supply

    Thanks all, Thats a few ideas to get me started. Looks like the zener method is unsuitable for most projects. A transmformer of some kind is in order. Regards Paddy
  8. Paddymagee

    48 VAC - 24 VDC Power Supply

    Thanks All, I there is only one transformer in the panel (its a lifting winch) which is 3-Phase 415V to 48VAC. There is no neutral in the panel. There is no room in the panel for anything but the smallest transformer. I think I might use a transformer intended change 240 - 110 to change 48 -...
  9. Paddymagee

    48 VAC - 24 VDC Power Supply

    Hi, I am trying to convert the 48VAC I have from a transformer into 24V DC for running a PCB. The current requirement would be 200mA max. I cant seem to find any off the shelf power supplies or transformers so I attempted to build a circuit by rectifing the 48V and then using the zener diode...
  10. Paddymagee

    Sound Recorder

    I checked out the bpe solutions site and this is almost what I am looking for. They have a maximum of 8 minutes recording time so I will see if I can do something clever with the control circuit. Its a standalone project so there is no PC involved. Thanks for all the help.
  11. Paddymagee

    Sound Recorder

    Hi All, Im looking for some ideas on how to do the following project I want to record a few different voice recordings and play them back. There will be 4 recordings in total. 1 x 5 minutes, 1 x10 minutes, 1x 15 minutes and 1 x 30 minutes. The recordings will be made once and stored...

Part and Inventory Search

Back
Top