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  1. (*steve*)

    Was, Were, Wasn't and Weren't

    If it wasn't for this thread I would have some minutes in my life that I wont get back.
  2. (*steve*)

    Partially shaded solar panels

    If it is lit by a permanent beam of sunlight from the heavens, perhaps you can place your panels around it. Otherwise it sounds like evidence that your neighbor is wasting electricity. Yeah, an extension cord sounds good. You can have a Virgin powered house.
  3. (*steve*)

    High Power Exclusive OR Gate Help

    You need to explain further. Do you want the device turned on when there is no power applied to the arduino? A mosfet requires a voltage to remain turned on, but it doesn't actually consume any power. A different voltage is required for it to be turned off. This is different from a bipolar...
  4. (*steve*)

    High Power Exclusive OR Gate Help

    You want to control a 12V 2A motor from an arduino? What you want is a mosfet. I think we have a resource describing how to use a most to switch a load.
  5. (*steve*)

    Partially shaded solar panels

    Is there any evidence of either? :D
  6. (*steve*)

    LED strip power supply

    Adding extra series resistance will reduce the peak current. I would connect one string of 1m of LEDs and determine the current/voltage required to get them to the desired brightness. From this you can calculate if your power supply is sufficient.
  7. (*steve*)

    Capacitor ID

    They are greencaps. Values are marked in pF. e.g. 103 = 10 * 10^3 pF = 10 nF = 0.01 uF 824 = 82 * 10^4 pF = 820 nF = 0.82uF
  8. (*steve*)

    Breadboard coil safety question with Make before Break?

    Not sure what "make before break" had to do with anything. I think you're asking about what you see as a solution rather than the problem. Sure it's possible that you can do damage with the energy stored in an inductor (just as you can with that stored in a capacitor) but more information is...
  9. (*steve*)

    Why DC motor draws more current with friction?

    It depends. Not all power supplies will like being placed in parallel.
  10. (*steve*)

    N-Channel MOSFET

    can you not place the N channel mosfet in the -ve (possibly gnd) side of the capacitors? Another option is a floating power supply or a charge pump. There are gate drivers which include a charge pump. otherwise, yes you can use a p Ch mosfet as a high side switch. In this case the gate is...
  11. (*steve*)

    Partially shaded solar panels

    <godfather>Such nice trees, it would be a shame if something happened to them</godfather>
  12. (*steve*)

    Unknown component

    Here is a great new resource that very few people know about. Use it and amaze people!
  13. (*steve*)

    Why DC motor draws more current with friction?

    The current in an AC motor is also limited by its inductance. Load on an AC motor can also change the phase relationship between the voltage and the current. This may not affect current very much, but it will affect the power. All three factors come into play with an AC motor.
  14. (*steve*)

    Pin 7 of 555 timer doesn't discharge

    The 4060 is an example. Perhaps the term "equivalent" was possibly not wisely chosen.
  15. (*steve*)

    Pin 7 of 555 timer doesn't discharge

    There is a CMOS equivalent too :-)
  16. (*steve*)

    Designing Relaxation Oscillator

    there are 2 voltages to consider. the first is the one where the ujt turns on, the second where it turns off. you have correctly identified that it turns on at a higher value than it turns off. there are two current paths to consider. the first is the one which charges the capacitor, the...
  17. (*steve*)

    Help with component choice / design in an alarm circuit

    Relax, the arduino has "EEPROM" that you can use to store the correct code even if the power fails.
  18. (*steve*)

    Max1044 high output

    yeah Lewis, the first thing would be to post a link to the datasheet and an image of the circuit you're using. it may be as simple as not having connected the powers supply pins. these are often not shown in circuit diagrams. And welcome to Electronics Point.
  19. (*steve*)

    Push Button H2O - Reversing Polarity

    My presumption is that a latching solenoid is like a latching relay in that power is only required to change the state, but not to maintain it. it could have 1 coil where the polarity is reversed, or 2 coils. in either case a momentary double pole double throw switch with a centre off will do...
  20. (*steve*)

    Pin 7 of 555 timer doesn't discharge

    Thanks for the information Jim. Is there a source of 5V in the equipment you have? Or maybe 12V? -- the PicAXE requires 5V, and if this is available it removes the need for a regulator. Also, what exactly is the nature of the input as it may require some conditioning. finally, we need to...
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