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  1. Um...Me123

    Simple help with transistors!!

    OK-------Back to the car thing... I got my lighted switches yesterday and just installed into the dash (was a little scary to think my new car could have a big hole in it if the switch didn't fit. The switch is a NKK pushbutton (on-off) that SPDT with isolated led leads/pins whatever you call...
  2. Um...Me123

    Simple help with transistors!!

    Working on another project dealing with the electricity choosing the path of less resistance thing. In the circuit a car deck has an auto antenna wire that goes 12V pos when the deck is turn on.  This in turn connects to a spot on the amp that signals it to turn on.  I have a (LED) lighted DPDT...
  3. Um...Me123

    Simple help with transistors!!

    The LED is an unknown sourse of light maybe its a led maybe its some sort of electroluminence (sp?) I just threw in an led to show that (resistor is there then) Yes I forgot the reverse diode. You always need a resistor on the base side of a transistor? Another question: in the case of...
  4. Um...Me123

    Simple help with transistors!!

    Thinking back to my car/fuse/relay question I came up with this little circuit that probably won't work or has an unnecessary transistor in it but what the heck! Basically I want the relay to come on when the PANEL (spelled wrong everywhere but here) lights come on.
  5. Um...Me123

    Simple help with transistors!!

    Um...you may have a good point in the first 3 lines. I always get stuck on the idea that electricity chooses it's path...sort of. Like say you have a 12V supply and you hook the leds and buzzer and the led is 3V and buzzer is 12V- You obviousely have a resistor for the led (in the assembly) so...
  6. Um...Me123

    Simple help with transistors!!

    It's that time of year again.  Back to the electronic firework firing box project. Was making some improvements to my older model and have a little transistor question. I have a wire that will go positive with around 12V under certain conditions (when a que is being tested)  I have a 12V LED...
  7. Um...Me123

    Simple help with transistors!!

    Ha hA hA HA---What!
  8. Um...Me123

    Simple help with transistors!!

    You always tell me to look at data sheets!
  9. Um...Me123

    Simple help with transistors!!

    So is an IR reciever like a transistor?  You supply its specified voltage/current on the positive side and when it recieves ir light it outputs that voltage on its neg side?
  10. Um...Me123

    Simple help with transistors!!

    Another question:
  11. Um...Me123

    Simple help with transistors!!

    Are you asking me a no-brainer or is it a serious question?  I'm not actually sure.  I think they do just not as well??  We can still use it at night so the question still stands.
  12. Um...Me123

    Simple help with transistors!!

    I got another transistor question (not like the other stuff had much to do with them) Here's the situation: --Istalled a sterio system in my boat.  Speakers are in the back facing forward-makes it nice for when the boat is parked so me can have beach music. --Just got new deck for boat with...
  13. Um...Me123

    Simple help with transistors!!

    More questions!! I figured out a better way of doing it all.  I'm using the fog light system with basically 2 relays in parallel. I tested the coil side of the relay socket and found it to be 12.8V and it maxed out my meter on amps it blinked on 14 then was 10A and beeped. The wires going to the...
  14. Um...Me123

    Simple help with transistors!!

    ::) That's exactly what I did...on my head-feet at the headrest with a trouble light! Here's a small problem-I went to measure the voltage and current accross the fuse and I first made sure I was right by removing it and I turn on the lights and they worked!  :o  Then I thought they controlled...
  15. Um...Me123

    help me!!about a mixer

    Is there a way to not use a 10K pot?  The site I use for parts does't have 10K!
  16. Um...Me123

    Bigginers Handbook

    After I put in the 3 numbers and hit the thing it says invalid download?! Anyone else have that problem?
  17. Um...Me123

    Simple help with transistors!!

    Ahhhh why is this soooo hard to understand!!!  I really don't know a purpose either but it's just fun. OK so I have things such as neons under my dash.  Whenever I turn on my parking/headlights the interior illumination comes on.  Right?  The numbers on your speedo light up and everything- all...
  18. Um...Me123

    Simple help with transistors!!

    OK I will be basic and I need you to be also: I have a fuse that has a 7.5 on it. Electricity presumably travels through it when certain lights within the vehicle light. I want a relay to click on when these lights come on. I can't draw too much power or put too high of a resistance on that...
  19. Um...Me123

    Simple help with transistors!!

    The fuse is a 7.5A and I want to be able to create a whole new switchable circuit using a relay so it can handle high loads.  I need as little draw on the 7.5A control circuit as possible.  New 12V feeds are availiable.
  20. Um...Me123

    Simple help with transistors!!

    I'm only 16 so try to deal with my only basic understandings and sometimes dumb questions. I need help understanding transistors.
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