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  1. Arouse1973

    Hi, Paul in Calgary AB

    Welcome to EP Pants. Nice to see you here. We are ready so come on give us some questions :) Adam
  2. Arouse1973

    Capacitors

    Hi Alec It might be better to say XC and not X, the OP will most likely encounter XC (Capacitive reactance) and not X. Also what do you mean X is chosen to be negligible at the frequency of interest, for what? Thanks Adam
  3. Arouse1973

    Capacitors

    Send us a link to where you found this formula. One purpose of connecting capacitor like that is to attenuate the input signal (Sine Wave). Think of it like a voltage divider for A.C, just like resistors are used for D.C. But you can do the same thing with resistors for A.C but not capacitors...
  4. Arouse1973

    Hi there, new around here and enjoy DIY stuff

    Hi Hector, Welcome to EP. Enjoy your stay! Adam
  5. Arouse1973

    Trickle Charge Batteries

    LM317 as a current source, used this for years charging 7.2 volt NIMH, with no probs. Adam
  6. Arouse1973

    role of schottky in sw regs

    The inductor is the supplier of energy and the diode supplies the path for this energy to flow in a loop. It does also clamp the flyback voltage from the coil which could otherwise damage the switching device. Adam
  7. Arouse1973

    role of schottky in sw regs

    Another name for this diode is a free wheeling diode. Thanks Adam
  8. Arouse1973

    how to interface zigbee with raspberry pi

    We need way more information than that. A circuit diagram would be nice. What modules are you using? What micro are you using? What software language are you using? What compiler are you using? ......Um anything else you might think is helpful. Show us the code that you have started. Sorry but...
  9. Arouse1973

    Fresh meat checking in

    Hey Doug, great to see you here. It's good to have people from all areas of electronics. I am sure you will be an asset when questions come up that relate to your experience. In the meantime sit back and enjoy. It can get quite technically heated at times. But it's great fun being part of this...
  10. Arouse1973

    Why are p-channel MOSFETs so resistive.

    Have a look at mobile charge carriers in N-Channel and P-Channel. Can you see that there might be more in the N-Channel type versus the P-Channel type? Thanks Adam
  11. Arouse1973

    Wien Bridge Oscillator

    Hello and welcome to EP. Your thread is missing something, I assume you were going to show us how to do it but you haven't? Adam
  12. Arouse1973

    Mosfet / Gate drive problems

    I tell you what. This HOP bloke is good aint he?
  13. Arouse1973

    Amplifier blows power fuse

    Hey Martin good to see you back. Adam
  14. Arouse1973

    Electromagnet with strength controlled by photoresistor

    Not far from 0.7 Ohms then :)
  15. Arouse1973

    Electromagnet with strength controlled by photoresistor

    Yep!
  16. Arouse1973

    Electromagnet with strength controlled by photoresistor

    What do you get when you join your meter wires together? Say 0.3 Ohms each wire will give you 0.6 Ohms + your resistor value. Adam
  17. Arouse1973

    Phase shift

    It was something I thought would work just of the top of my head. I don't have anything written down. The formula I gave was to calculate the phase shift. Show us what you did and what was wrong. Adam
  18. Arouse1973

    150v DC-DC buck converter

    Hello Why does it need to be a buck convertor? What are you using this for. It concerns me that you are asking what parts would be needed to build one. What experience in high voltage electronics do you have? Thanks Adam
  19. Arouse1973

    Homemade PCBs with a Brother printer - 4mil Traces

    Very impressive Dan, well done. I think the sand paper you used was a bit on the coarse side. You may find some fine wire wool is all you need. Good job. Adam
  20. Arouse1973

    Help with Voltage Transients

    The first thing you need is a flyback diode across the relay to protect the MOSFET. When you say back EMF, where is the motor? Is it the other inductor. What voltage are you trying to limit? Thanks Adam
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