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  • 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 amritsen

  1. A

    remote control operated switch for room light

    I want to submit a project before 1 Oct. . But .. it isn't working ..Dr.
  2. A

    remote control operated switch for room light

    No... positive 5v on red probe .. nd 14 pin .. black probe
  3. A

    remote control operated switch for room light

    OK cowboypop... When not pressing - pin 14 shows 4.7 V and when pressing .. showing 0 v .. but only for 1 second .. after this again 5 v
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    remote control operated switch for room light

    Yup .. tsop is OK .. when not pressing remote it shows 0.05v .. when pressing ..shows 0.5-0.6 V .... Similarly .. @ t1.. shows 5 v when not pressing button ... and 0 v when pressing ... But 0v only for a second .. after this again 5v ... that means it is not holding (might be )...
  5. A

    remote control operated switch for room light

    The output is not coming from pin no. 2 When pressing the button of the remote... and when pressing .. Red led just blinks once..
  6. A

    remote control operated switch for room light

    Hello everyone .. . I have completed the circuit .. but output is not coming from pin no.2 of the ic .. I have used Ic 4017BE please help how can I make this in working condition ... Les .. plz help..
  7. A

    remote control operated switch for room light

    so let me know some other options ,,, if IR reciever is not good,, ?
  8. A

    Problem in starting DVD Player

    Hello everyone, I am in a problem in starting a dvd player, the problem is - When I am starting or play it, the display is OK .. but disc just started for few seconds and then stopped.. I checked the power PCB and found OK .. Now I want to know - what is the problem ?? And how to solve the...
  9. A

    remote control operated switch for room light

    Thanks les I got BC 327 25 from my garbage. . . I think it will work in place of BC558..
  10. A

    remote control operated switch for room light

    I think any TV REMOTE control can switch this circuit on off .. work is under progress ..
  11. A

    remote control operated switch for room light

    Ya..558 is PNP and 548 is NPN..I am searching for the transistors you suggested .. thanks What is the ir frequency used band in General tv remotes ??
  12. A

    remote control operated switch for room light

    Thanks Jones Actually I didn't design it .. I just copy the circuit from efy projects website .. i am soldering the components at this moment ..but right now I don't have the BC558 transitor .. i want to replace this transistor by something else..please suggest some other options for the...
  13. A

    remote control operated switch for room light

    One more question ,, can any IR remote can be used for this ciruit ??
  14. A

    remote control operated switch for room light

    Hello everyone, I am designing a circuit for remote controlled operated switch for the household lighting, circuit is taken from efy projects. I am using 5 v DC supply for the circuit, here I have some questions regardin the circuitory, Here I have to put a transistor BC 558, can we use a...
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