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  1. Pharaday

    Fuse length and you! For your health!

    Ok so this isn't a stupid question because it's not going un-asked. Can I use this fuse? Its electrical values are exactly the same as the one I pulled out (250v 500mA time delay). Could I attach a wire from one end of the fuse to the contact? What would be the dangers if I did this? It's a 120v...
  2. Pharaday

    How to: power this old ringer?

    How do I make this ring? Inside the bell is alot like my old doorbell. It has copper coil that drives a ringer (ya know, with electromagnets/opposite poles, that thing) which moves horizontally and strikes both sides of the bell. I just wanna give it a battery and a switch amd make het ring ...
  3. Pharaday

    Fuses, fuses...

    Ok, so I need to replace a fuse in an amp. The original fuse was 250V 500mA. I have a bunch of fuses but none that exact value. Am I correct to make an ass out of you and me that I can use fuses with higher values but not lower? How does that work? For instance, I have a 250V 1.6A fuse. Can I...
  4. Pharaday

    12V adapter + resistor = 9V adapter?

    This one seems kinda silly, but a buddy of mine suggested it and it seemed so crazy it might just blow my electronics... I mean work. I want to add some resistors to a 12V adapter to make a 9V adapter. I know that the amps is what I need to look at. I've seen one working, tested volts etc. but I...
  5. Pharaday

    Respectfully requesting audio related info.

    Hello good sirs and thank you for your time. What a wonderful American day it's been. I donno what part it was ummm, and my dear friend Professor 73 De Edd or, translated to my native peasant tongue, Eddie 73, my most thoughtful responder, hello to you too! I would like, if it's not...
  6. Pharaday

    Blown guitar amp! SOS!

    So, I took my Fender Frontman 15G guitar amp over to a buddy's house and when I plugged it in, it made some weird buzzing noises, so I turned it off and it would never come back on. I investigated and learned that when I unplugged it, the 3rd, grounding prong on the power cable stayed behind in...
  7. Pharaday

    Help with AVL cricket

    Here is an AVL cricket. I'm told it does stuff with music and lights. But I cannot find an instruction manual ANYWHERE. Can anyone tell me how to use this thing? I know these pics are blurry, I'll describe the port/control labels to you left to right top to bottom. I don't have whatever plugs...
  8. Pharaday

    This some kind lightbulb or...

    Is this thing a light bulb or some kinda supernatural talisman? If it's a bulb how many volts would it take and why does it has 3 leads on it?? If it's a supernatural talisman, how many volts would it take? Pic incoming!
  9. Pharaday

    What the heck is this thing?!

    Do I get 2 questions a day? Well, this thing is a TV focus block. Anyone know how it works? I was hoping I could use it as three potentiometers but none of the terminals in the back seem to be connected to eachother. Well how CAN I use this besides focusing TVs?
  10. Pharaday

    Powering an old smoke detector

    So I got this old style doorbell. Might be broke. It has 3 wires coming out of a plug that can have 4. When I power the black and one of the white wires, the LED lights up. But I cant make it ring. Tried powering the other wire already. Do I need the 4th wire to that plug? Help P.S. why is the...
  11. Pharaday

    Powering oscillated peizo buzzer

    I'm trying to push sound through this little peizo buzzer for a talkbox. it's normally coennected to what I assume is a square wave generator but in rearsight, I guess it might be an amp. The circuit has 3 terminals. You put gnd to one and hot to either of the others, depending if you want a...
  12. Pharaday

    help me, signed 2 cable boxes...

    ok so I have these boxes (see pic, fig. 1) and the continuation of my science demands that I harvest its LEDs, inputs, outputs, caps, resistors etc. but then I noticed the out enclosed by a red circle in fig. 1. Now my noise engineering demands that I attempt to use these as a converter to...
  13. Pharaday

    Rotating motor direction

    Hello, I recently started to regret that we got all take hΩ tests in my circμit analysis class, so I joined this forum. I have taken a rotating motor out of a broken heater. The motor was used to rotate the heater left and right with an arm. It is a synchronous motor TYJ50-8A. I took the motor...
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