Continue to Site

Welcome to our site!

Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Register Log in
  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Recent content by weekendshock

  1. W

    HELP! 12V light controller

    hi, The circuit that I built from Ron's schematic is really nice (pretty). Is there a way that I could splice a 220 ohm resitsor into this without complete reconfiguration. Is it possible to leave first inverter power other five to feed the base of transistor? Also why is power being consumed...
  2. W

    HELP! 12V light controller

    Hello again, CORRECTION!!!!!!!!!!!!!! In my last post I said resistor connected to leg one of trim pot and that is correct, but leg one of IC and LDR do not. They connect to leg 2 (center) of trim pot. Sorry, should have read again before sending.
  3. W

    HELP! 12V light controller

    Hello KISS, I have duplicated the circuit that Ron sent me in his schematic. Thanks Ron, beautiful job! It came out very nice connection wise, if I do say so myself. The lamp turns on and off as intended and is adjustable for light sensitivity through variable resistor. Unfortunatly, the IC and...
  4. W

    HELP! 12V light controller

    WOW! This is getting more complex than I ever imagined. Are you sure that this is not being over designed for the actual need? I would hope that by combining those other five in the Schmitt, it would turn on the transistor "harder" as has been suggested. If need be, I could go with one of those...
  5. W

    HELP! 12V light controller

    It must have limiting built into it because I can hook it up to a twelve volt car battery and it runs just fine. I also have a transformer that is 12.5 volt dc, 800mA and it also runs fine when I power it directly from that. I am going to use this when I light the flag on the house and is the...
  6. W

    HELP! 12V light controller

    Hi again, Didn't see the rest of your reply until just now. Yes, I am using a 3watt led lamp. It is 3X1 watt at around 6000K, works fantastic, draws very little, runs quite cool even in water-tite enclosure and has long life. It runs all night and only brings my batteries (I have two deep cycle...
  7. W

    HELP! 12V light controller

    Hello A.G. Can you suggest an appropriate resistor? I can of course add one, but would have no idea as to the proper value that would limit current by the proper amount. This is a small circuit , approx. 1" X 1" and must fit inside of a weather-proof enclosure that I selected. Adding one more...
  8. W

    HELP! 12V light controller

    LDR light controller Hi AG, I run this in my RV to keep "Old Glory" illuminated all night. Of course my rig is 12V so it is Run What Ya Brung. I am giving one of these to my Sister and Brother-in law for Christmas and I am going to drive it with a transformer. 115V-800Ma dc out. Are you...
  9. W

    HELP! 12V light controller

    Hi guys, Especially, AG, KISS and Ron for his beautifull schematic. I really appriciate all the time and help you are providing to help me. If I understand this correctly, I need to tie all odd numbered legs together and all the even numbered legs together except for # 1 and 2 which of course...
  10. W

    HELP! 12V light controller

    Increasing base current Hello Audioguru, I am a total novice when it comes to these things. (could you tell?) lol Can you please be very specific with your instruction as to how I go about paralleling the other five triggers? I know that 3, 5, 9, 11 and 13 are in and 4, 6, 8, 10 and 12 are...
  11. W

    HELP! 12V light controller

    Hi, Thanks. Does this circuit look good to you? Can you tell me which legs to connect together or omit? I know that leg one and two are one of six triggers and that is the one I am using. Number seven is ground and number fourteen is +V. What do I do with 3,4,5,6,8,9,10,11,12, and 13? As said...
  12. W

    HELP! 12V light controller

    Hi Mike and KISS, Thanks for getting back to me. I have thought about using a different transistor to overcome this problem, but this used to work using these particular components even when it was over 100 degrees all night long in Arizona. I remember the person that built the original one...
  13. W

    HELP! 12V light controller

    Hi, I am trying to power a 12 volt-6watt LED lamp that comes on a dusk and goes off at dawn. Long story, but I had a circuit that a friend built several years ago. It consisted of a photo resistor, Schmitt trigger, 2N2222 transistor, 50K ohm trim pot and a 1K ohm resistor. The Schmitt is...
See more

Latest threads

New Articles From Microcontroller Tips

Back
Top