High bright White LED CKT Diagram !

<div class="separator" style="clear: both; text-align: center;"></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg3c9Mo21_b3y1GdqRh-xmZci0sznibGdx6hvHLMY38GWv73ZMWg_wMCLMipfXKbQJCZNxuYJjoRdpxTK478jrivtVR8GIxfv5EnyZTUdxsJ14fuaVbl-L4Df9RYHZn4iNWbRnh7ZPfAR4/s1600/MAINS-NIGHT-LIGHT.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg3c9Mo21_b3y1GdqRh-xmZci0sznibGdx6hvHLMY38GWv73ZMWg_wMCLMipfXKbQJCZNxuYJjoRdpxTK478jrivtVR8GIxfv5EnyZTUdxsJ14fuaVbl-L4Df9RYHZn4iNWbRnh7ZPfAR4/s320/MAINS-NIGHT-LIGHT.gif" /></a></div><br /> <b>Warning ! </b><br /> Don’t touch <span class="IL_AD" id="IL_AD1">the circuit</span> when plugged to the mains supply, this will cause a lethal electrical shocksince it’s not isolated from the mains supply. A column of 10 white LEDs is illuminated by this circuit. The flicker is prevented by 10u capacitor and reduced by 100R resistor.

High bright White LED CKT Diagram !

Warning ! Don’t touch the circuit when plugged to the mains supply, this will cause a lethal electrical shocksince it’s not isolated from...

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Night Light Ckt Diagram

<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhvinuB2BPKxBrRCWcK2DhxBl0PJRhy1Q73ZvHEXiJOrEGLcQ6Ig_alrFtlVKsJSg3KRmKCVo0eHB77a3SBZrCfxjkKR00RBdpLNMllgPs2_TYKCA0xsLR1o6YvcFZXJcD_8OfB_pW-kDs/s1600/nightlight_ckt1.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhvinuB2BPKxBrRCWcK2DhxBl0PJRhy1Q73ZvHEXiJOrEGLcQ6Ig_alrFtlVKsJSg3KRmKCVo0eHB77a3SBZrCfxjkKR00RBdpLNMllgPs2_TYKCA0xsLR1o6YvcFZXJcD_8OfB_pW-kDs/s320/nightlight_ckt1.jpg" /></a> </div><br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> As load on the relay is bulb and I assume that you don't have any timing constraints so you can use any general purpose relay.<br /> <br /> When relay is in off state NC gets connected to COM and when relay is in on state NO gets connected to COM.<br /> <br /> Expansion of these terms is:<br /> <br /> NC = Normally Closed<br /> NO = Normally Open<br /> COM = Common]<br /> <b style="color: blue;"><span style="font-size: large;"> More Explain </span></b><br /> That sort of arrangement would be much more economical on batteries,<br /> however any current through the LED also flows through the limiting<br /> resistor, so to keep this fairly low, how about making the supply<br /> voltage 4.5 volts, three cells, that means the limiting resistor<br /> would be using less power than the LED rather than more with 9 volts.<br /> <br /> Also if you cross couple between the collector of the second transistor<br /> with a high value resistor back to the first transistor, then you get<br /> a slight "schmitt" effect and the LED should switch on rather than<br /> wind up gradually. This could save a little on batteries too as it<br /> would only come on when needed

Night Light Ckt Diagram

  As load on the relay is bulb and I assume that you don't have any timing constraints so you can use any general purpose relay...

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230V Blinking LED

<a href="http://eeefirm.blogspot.com/" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img alt="External links - Jquery" height="106" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEihGxu0A4NtcyGko9HTeUYTBL_6AqO9xpOhaj_MMFjJsrMaRK3wR86j-dTrjrIiJTmV9iEHYAKkBnpcxFcv3bNvZWulEpoI2-4STisuzzLX20nmtxB3gh3OhHBIcad0yBN7o1I1QdvPltQ/s1600/led_of_led_1.jpg" width="106" /></a> <br /> <br /> <div class="slide"><br /> <br /> <br /> <br /> <br /> <br /> Already I have posted 230V LED circuit diagrams.This circuit is different than those circuits.Because this circuit is blinking circuit.And here I have used common parts so you all can find them easily.Already I have attached this circuit with our doorbell switch then the visitors who visit my place at night can see it well<br /> <br /> <div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgxI3NklqhLHovQhU7RGLrFobZkgM62skgsz4NwPk5P5_SE9f2A0tAZwffAClcjHch-UNG1rxz9F_tBhikS3gwdOJZcBLGoe7UoKnr7mipeGm69HNVyR_DQIDhhDnTIPP5tJmxDy8Sov9s/s1600/mains-operated-blinking-LED.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" style="margin-left: 1em; margin-right: 1em;"><img alt="" border="0" id="BLOGGER_PHOTO_ID_5493224512250103154" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgxI3NklqhLHovQhU7RGLrFobZkgM62skgsz4NwPk5P5_SE9f2A0tAZwffAClcjHch-UNG1rxz9F_tBhikS3gwdOJZcBLGoe7UoKnr7mipeGm69HNVyR_DQIDhhDnTIPP5tJmxDy8Sov9s/s200/mains-operated-blinking-LED.JPG" style="display: block; height: 169px; margin: 0px auto 10px; text-align: center; width: 200px;" /></a></div><span style="color: red; font-weight: bold;">Note:-</span><br /> <br /> # <span style="color: #ff6666;">When you deal with 230V be careful because it is dangerous</span><br /> # Fix this circuit in a plastic box</div>

230V Blinking LED

Already I have posted 230V LED circuit diagrams.This circuit is different than those circuits.Because this circuit is blinking circ...

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