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  1. (*steve*)

    Robotic Squirrel Trap

    I want to know who makes these robotic squirrels. They look just like real ones.
  2. (*steve*)

    Cant work with ne5534 amp

    I kinda thought so, but I asked the question since circuit diagrams and the construction details are visible in the video. ... And the original question was not something I felt I could guarantee I completely understood :-)
  3. (*steve*)

    Running house LED lights on AC

    He did say "usually". In many respects the odd two phase electrical system in the US is weird (and unusual) :-)
  4. (*steve*)

    Cant work with ne5534 amp

    Is that your video or someone else's? It works on the video.
  5. (*steve*)

    Cant work with ne5534 amp

    Can you show us your schematic and give us a picture of your constructed circuit?
  6. (*steve*)

    Hello, can somebody help wich transistor is like bfg520

    I thought the FM band was 88 to 108 MHz?
  7. (*steve*)

    Hello, Welcome! (Introduce yourself)

    Hi Joyce, welcome to Electronics Point.
  8. (*steve*)

    Electric paint ...

    If you have a use for it, yes; otherwise no.
  9. (*steve*)

    I want to make DC-DC voltage booster

    Connect 4 of the 3.2 V batteries in series for a battery pack which will power the modem.
  10. (*steve*)

    How does a Battery management board work?

    Well, not actually "shorting". It is fairly common that a BMS will level the cells during the charge cycle by dissipating excess charge on the lowest capacity cells as heat. Some boards just use a MOSFET for this task. It is possible to do this equalization just when the cell reaches its...
  11. (*steve*)

    Continuity Tester for Codger...

    If I were in that situation I'd probably make a simple circuit that illuminated a bright LED when there was continuity (or near continuity).
  12. (*steve*)

    Pedal powered generator

    It's also interesting to look at the comparative power output of endurance athletes vs sprint athletes. Sprint athletes tend to use an anaerobic process, relying on energy stored in their muscles. This is highly available, and provides a much higher peak power, but results in a buildup of...
  13. (*steve*)

    Pedal powered generator

    You'd be surprised about the endurance of kids. A recent study showed that most kids have the endurance and recovery of adults who are classed as "elite athletes". See here.
  14. (*steve*)

    Understanding N channel and P Channel FETs

    What you need to consider is the channel state when Vgs = 0. If there is conduction, and you have to change the Vgs to turn the device off, then your action to use the device is by depleting the channel, and this the device is depletion mode. In the reverse case, where Vgs = 0 results in no...
  15. (*steve*)

    How does a Battery management board work?

    There are also MOSFETs shown in the more complex circuit shown earlier. I'm not sure what you mean. No it won't. This provides power to the IC.
  16. (*steve*)

    Thermistor help

    For me the question would be whether to get the correct thermistors or considering hacking the printer. There are plenty of factors going each way, but waiting for the correct thermistors is going to be lower risk and it leaves you with a standard printer that won't surprise you in potentially...
  17. (*steve*)

    Thermistor help

    You may have to recalibrate the temperature readings on your 3D printer. Even two thermistors of the same type will differ slightly in their characteristics, and removing and remounting the same thermistor can result in different performance. The difference you're seeing is larger than I'd...
  18. (*steve*)

    Is the following a universal gate?

    Yes, but you also make a distinction between a gate with an inverter added at the output and a gate with an inverter added at one input. There seems to be no logical distinction other that perhaps some appeal to symmetry. As @BobK points out, there is a simple list comparing all possible...
  19. (*steve*)

    Different numbers should activate different LED

    You could start with something like an Arduino.
  20. (*steve*)

    Fluctuating ADC Reading for 4-20mA Pressure transducer input

    Your measurements with a multimeter may not show rapid changes. Have you tried looking at the voltage using an oscilloscope or even your multimeter on an AC range? What effect sites placing a capacitor (say 1uF) across the resistor have? If you connect the ADC input to a voltage divider...
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