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  1. Sadlercomfort

    battery decorations converted to mains tranformer

    Yeah, it doesn't feel right to use them like that..
  2. Sadlercomfort

    battery decorations converted to mains tranformer

    I read somewhere before about the diode voltage drop changing when the load current changes. But I guess that doesn't apply here. So its be possible to use one voltage supply and create a series network of diodes to provide the necessary voltage drop
  3. Sadlercomfort

    battery decorations converted to mains tranformer

    Okay Dave, would the diode voltage drop be unreliable though depending on the current?
  4. Sadlercomfort

    LED lights dimming after several minutes

    No problem ;)
  5. Sadlercomfort

    LED lights dimming after several minutes

    Same led type as I have! Those 300 leds consume 2A. So a 12V, 2A adapter or higher current is needed. I think your batteries setup might discharge about every 10 hours. Depending on there current rating. Still I would recommend a DC Adapter, these are really common 12v, 2A so you might...
  6. Sadlercomfort

    battery decorations converted to mains tranformer

    Each light would have an led and a resistor to create a voltage drop and limit the current. (Apart from the button batteries) So each circuit in each light is already designed for there battery voltages. If you can create several different voltage rails for each light it would be simpler. If...
  7. Sadlercomfort

    LED lights dimming after several minutes

    If you know how many leds are in the strip you could find out the current draw that way. Let's say 100 leds at 20mA: 100×0.02=2A Then a 12V, 2A adapter would be suitable. It's a more permanent than batteries but at least they won't discharge after a few hours.
  8. Sadlercomfort

    LED lights dimming after several minutes

    The voltage seems perfectly fine for the application. How long is the strip? The smd leds may be small but can consume alot of current if your running a few meters. I recently brought a 5m strip myself, which consumes 12v, 5A! If I used batteries I would experience the same issue your...
  9. Sadlercomfort

    16 Bit LCD programming

    Thank you! :D
  10. Sadlercomfort

    16 Bit LCD programming

    Sorry, Where is Nigels C code? I haven't been able to find it.
  11. Sadlercomfort

    PIC18F4680 Graphical LCD

    Never done a GLCD, but it's on my to do list. Would like to see how you get on, it can be difficult finding a library. I may have some code in a pic microcontroller book I brought recently, I'll share it with you tomorrow.
  12. Sadlercomfort

    Help! Repairing water damaged PCB from Massage chair.

    The capacitor should really be replaced with a 25V 2200uF or higher voltage. The 2200uF is important. Please show us some pictures and any circuit diagrams if you have them. I would of thought that the remote would be 5V, but not sure at this stage. What type of remote is it?
  13. Sadlercomfort

    What is your favourite type of component?

    I love 555 timers and Microcontrollers!
  14. Sadlercomfort

    ESD Protection - Design Consideratons

    That part is obvious, can someone simply provide some sources for esd protective circuit designs. There are many circuits online, but I'm looking for a good in depth read.
  15. Sadlercomfort

    ESD Protection - Design Consideratons

    Of course, although the development of ESD really is becoming more important due to increasingly developed IC's. The article does discuss "Device-Level ESD protection" and three device models: human-body model (HBM), machine model (MM) and the charged-device model (CDM). Which includes...
  16. Sadlercomfort

    ESD Protection - Design Consideratons

    Hi guys, I've found some of the following information very useful for those interested in design. ESD is quickly becoming an important aspect of hardware design, as integrated devices are manufactured smaller and are increasingly sensitive to static discharge. The article is easily read and...
  17. Sadlercomfort

    Schottky Diode - Open Circuit

    I can't show you the remote I'm afraid because of a disclosure agreement =[ The remote has only 3 buttons, which draws approximately 30mA when one is pressed. It draws very low current when not pressed... its negligible. Usually the buttons are pressed for 10 seconds a time, with long delays...
  18. Sadlercomfort

    Schottky Diode - Open Circuit

    I'm getting 1MΩ and OL when I test it in reverse polarity. It seems when I put reverse the polarity of the supply for to long and measure the resistance again, I get OL and 52MΩ when I test it in reverse polarity.
  19. Sadlercomfort

    Schottky Diode - Open Circuit

    So its unlikely that a faulty 'resistive diode' could be the problem. What do you mean by checking the resistance seen by the battery? Measuring the resistance across the +/- terminals with the battery pulled? I can test this on a new remote if necessary. I know the batteries are ok after...
  20. Sadlercomfort

    Schottky Diode - Open Circuit

    Hi Guys, I'm investigating a faulty infrared remote at work, the remotes seem to be discharging the 9V batteries when not in use. Now, upon my initial investigation I noticed that the Schottky Diode which protects the circuit from reverse polarity was open circuit. I then confirmed this fault...
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