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    Infrared Activated Switch

    Hi guys, audioguru, I’m afraid the circuit you pointed me to is somewhat complicated and I don’t need 500W. Let me rephrase my question neglecting heating and power needed. If I were to oscillate 50 Hz using a 555 timer, then connect it the BE of a high power transistor to the output of the...
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    Old pentium 1 processor

    Hi, If i did manage to get hold of an old motherboard (for the P1 processor), how would that help? L8r.
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    Old pentium 1 processor

    Hi all, I once found this old computer thrown away, and to any electronics freak, one would take it and be happy ;D. I managed to get the Processor. I’m not sure of its speed, perhaps 166MHz (oh my god), and some 32MB ram sticks. Back then, I was quite dumb to throw the rest away. I also got a...
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    Infrared Activated Switch

    Dear Shahriar, I took a look at the circuit you pointed me to, but that’s not what I'm looking for. The circuit has no optical input (i.e. phototransistor), and has a reset switch that I don’t know why it needs it. I'll simplify things and ask a simpler question. How do you use the LM567 IC...
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    Frequency Generator

    Hi, I’m no expert, but I think it would be quite difficult to use a POT to change the frequency of such small range. I have used the 555 timer for some time and am quite familiar with it. I have a schematic which I took of the Maplin catalogue which has worked quite nicely with me. I’ve...
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    Infrared Activated Switch

    Hi, Thanks Shahriar, but the problem is, I can’t find these IC's. I even looked in Maplin and some other shops but no luck. As you may have read, I have an LM567 Tone Decoder. I’m not sure if this will work, but would it be possible to use an NE555 timer to oscillate i.e. 10KHz and then use...
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    Infrared Activated Switch

    Hi, Thank you sooo much. I prefer building the circuit my self. So, the first link was the best. If you know any more similar links to the first one, it would be greeeeeat if you could share it. Again, thank you soo much. Bye! :)
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    Infrared Activated Switch

    Hi all, I’m in need of desperate help. I’ve searched ages for a simple circuit but failed to get one. What I have in mind is this.  An Infrared transmitter will emit a signal which will be picked up by a receiver and when the path of the infrared beam is broken, the receiver will trigger a...
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