Electrical And Electronics Engineering.

Auto Off Light Circuit !

<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgFMVNh_UvKIVc5-12XaSW5vc3VltZ58RSyEVVEFysTmaMxGCSmG2lhgZgWnOf-3Yuh-KxzLJmzUNhUYtL72e05c9C4T8qACgwUS1b8lHVqlsCHN14JeYTcTb-tXvuzim3G57_8ArLDLLc/s1600/Auto-OFF-Light.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgFMVNh_UvKIVc5-12XaSW5vc3VltZ58RSyEVVEFysTmaMxGCSmG2lhgZgWnOf-3Yuh-KxzLJmzUNhUYtL72e05c9C4T8qACgwUS1b8lHVqlsCHN14JeYTcTb-tXvuzim3G57_8ArLDLLc/s320/Auto-OFF-Light.gif" /></a></div>his is Auto OFF Light circuit. After the <span class="IL_AD" id="IL_AD1">switch</span> is pressed, the bulb is kept illuminated for a few seconds. To increase the “ON” time, The 10k should be  replaced by 100k. <span class="IL_AD" id="IL_AD2">Here is the</span> circuit You can use this delayed auto-off lamp circuit to give temporary <span class="IL_AD" id="IL_AD3">lighting</span> for  your stairway, or your dashboard, your bookshelf, or many more.<br />
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Auto Off Light Circuit !

his is Auto OFF Light circuit. After the switch is pressed, the bulb is kept illuminated for a few seconds. To increase the “ON” time, The ...

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...

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 />
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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 />
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When relay is in off state NC gets connected to COM and when relay is in on state NO gets connected to COM.<br />
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Expansion of these terms is:<br />
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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...

About Circuit Breakers !

<h2 class="pHeading1"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhGfHeDCdCaqRVK6WPjW7WD3t8qjMHxlOVw8hcT7x_yTI1_fkAwI8RQywbqEB12DlIjWQBW_PNY8ANLFKM5YhVkquVy6abSF8eAnNvcwrDVOgRkOq031Ym2mHV5PhrY3mipHRjpsz3zOdM/s1600/CB1.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/AVvXsEhGfHeDCdCaqRVK6WPjW7WD3t8qjMHxlOVw8hcT7x_yTI1_fkAwI8RQywbqEB12DlIjWQBW_PNY8ANLFKM5YhVkquVy6abSF8eAnNvcwrDVOgRkOq031Ym2mHV5PhrY3mipHRjpsz3zOdM/s320/CB1.jpg" /></a> </h2><h2 class="pHeading1"> </h2><h2 class="pHeading1"> </h2><h2 class="pHeading1">  </h2><h2 class="pHeading1"> </h2><h2 class="pHeading1">Many Type of CB Sale by Market !</h2><h2 class="pHeading1"> I am Try to give basic  Knowledge for  Overview Circuit Breaker ! Because next Time When Present Some Project Then Need this basic !</h2><h2 class="pHeading1">NZM circuit-breakers  <span class="debug"></span> </h2> <a href="" name="wp1079030"> </a><div class="pBody"> These circuit-breakers protect electrical equipment against thermal overloading and short circuits. They cover the rated current range from 20 to 1600 A. </div><a href="" name="wp1017690"> </a><div class="pBody"> Depending on the version, they have additional protective functions such as fault-current protection, earth-fault protection or the capability for energy management by recognition of load peaks, and deliberate load shedding. </div><a href="" name="wp1017691"> </a><div class="pBody"> Circuit-breakers NZM are distinguished by their compact shape and their current-limiting characteristics.   </div><a href="" name="wp1017692"> </a><div class="pBody"> Switch-disconnectors without overload or tripping units are available in the same sizes as the circuit-breakers and can be fitted with additional shunt or undervoltage releases to suit the respective versions. </div><a href="" name="wp1017693"> </a><div class="pBody"> Circuit-breakers NZM and switch-disconnectors are built and tested according to standard IEC/EN 60947.   </div><a href="" name="wp1017694"> </a><div class="pBody"> They feature isolating characteristics. In conjunction with a locking device, they are suitable for use as main switches according to IEC/EN 60204/VDE 0113, part 1. </div><a href="" name="wp1040492"> </a><div class="pBody"> The electronic releases of frame sizes NZM2, NZM3 and NZM4 feature communication capabilities.   </div><a href="" name="wp1079241"> </a><div class="pBody"> The current states of the circuit-breaker on site can be visualized via a <b class="cBold">D</b>ata <b class="cBold">M</b>anagement <b class="cBold">I</b>nterface (DMI) or via digital output signals. Additionally, the circuit-breakers can be connected to a network, e.g. </div><div class="pBody"><br />
</div><div class="pBody">Thanks for collection Waring Manual  ! </div>

About Circuit Breakers !

Many Type of CB Sale by Market ! I am Try to give basic Knowledge for Overview Circuit Breaker ! Because next Time When Presen...

Star Delta Starter 3-Phase Motor

<div class="pCellBody"><b class="cBold">Pushbutton actuators</b>  </div><a href="" name="wp1001605"> </a><div class="pBody"> K1:  Timing relay approx. 15 second   </div><a href="" name="wp1001606"> </a><div class="pBody"> Q11: Mains contactor (Magnetic Contactor)</div><a href="" name="wp1001607"> </a><div class="pBody"> Q13: Star contactor   (Magnetic Contactor)</div><a href="" name="wp1001608"> </a><div class="pCellBody">Q15: Delta contactor  (Magnetic Contactor)</div><div class="pCellBody"> </div><a href="" name="wp1001609"> </a><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgwIzihv30mDEbj-Augavg9Nz2ODztFcvvs1KZ6JFnOG_dWnOnzKTHLnD1bHYLn6BCZEYyjAy0o8gV8-dlcDn2eQkfRdMBtDALi4F-AyJ4XFLWPNgWA0LHwXCBAZ-VDevguVI-5LHAfoQg/s1600/Star+Delta+W-Dia.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/AVvXsEgwIzihv30mDEbj-Augavg9Nz2ODztFcvvs1KZ6JFnOG_dWnOnzKTHLnD1bHYLn6BCZEYyjAy0o8gV8-dlcDn2eQkfRdMBtDALi4F-AyJ4XFLWPNgWA0LHwXCBAZ-VDevguVI-5LHAfoQg/s320/Star+Delta+W-Dia.jpg" /></a></div><div class="pCellBody">Double actuator  </div><a href="" name="wp1001611"> </a><h3 class="pHeading3"> </h3><h3 class="pHeading3"> </h3><h3 class="pHeading3"> </h3><h3 class="pHeading3"> </h3><h3 class="pHeading3"> </h3><h3 class="pHeading3"> </h3><h3 class="pHeading3"> </h3><h3 class="pHeading3">Its a Star Delta 3-Phase waring Diagram   </h3><i><b>Description </b></i><br />
<i><b> </b></i> <a href="" name="wp1001612"> </a><br />
<div class="pBody"> Pushbutton I energizes timing relay K1. The normally open contact K1/17-18 (instantaneous contact) which applies voltage to star contactor Q13, which closes and applies voltage to mains contactor Q11 via normally open contact Q13/14-13. </div><a href="" name="wp1001613"> </a><div class="pCellBody">Q11 and Q13 maintain themselves via the normally open contacts Q11/14–13 and Q11/44–43. Q11 applies voltage to motor M1 in star connection. </div><div class="pCellBody"> </div><div class="pCellBody"><b>Its Second Picture For Auxiliary Diagram !  </b></div><div class="pCellBody"><br />
</div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi1dKNHXwbyB9ia_1GOxSajrseKL8TyOELHDGizxJabF6dW5uNFQ5KyCGesXjDc7afhz7DR3GjDG6alh0VwWVBABwzJk4M7dQiR71GDuggVzYP3iyeIl2aBe_MTK_jfsy0_0IZgSWB_rUk/s1600/Auxulary+Diagram.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><br />
</a><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhl6MV7WZCeUNjUwrb56Za9elIF0zHymfOfw0Wo5kROeijx3icRlaQH45bNeycbjd-qudfFc2-_xosg3JZ3MTixNWqwYUjb8lx2_1-aBDaaP1VPpi27SL8KEZCBuXvW1ZGsBkCybETlXZg/s1600/Auxiliry.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhl6MV7WZCeUNjUwrb56Za9elIF0zHymfOfw0Wo5kROeijx3icRlaQH45bNeycbjd-qudfFc2-_xosg3JZ3MTixNWqwYUjb8lx2_1-aBDaaP1VPpi27SL8KEZCBuXvW1ZGsBkCybETlXZg/s320/Auxiliry.jpg" /></a></div><div class="pCellBody">Think It !</div><div class="pCellBody">At First Press On Push and Electron Go to K1 Coil Supply . K1 Timer Active And N/O Close then Q13 Active/Q13 - N/O Close and Q11 Active ! ( Motor Already Start Star connection )! 15Sec Later Timer Disconnect K1 Q13- Contact17/28, and connect 17/18 and Finaly Motor Run Delta Connection !</div><div class="pCellBody">Please see the Picture When Q13 On Then Q15 off And When Q15 on then Q13 Off ! So No Risk for Short Ckt ! Thanks By eeefirm Admin !</div>

Star Delta Starter 3-Phase Motor

Pushbutton actuators K1: Timing relay approx. 15 second Q11: Mains contactor (Magnetic Contactor) Q13: Star contactor (Magnetic...

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 />
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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 />
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<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 />
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# <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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