SOLAR BUG

Solar BugThis is a fun circuit, hide this solar-powered circuit suitably and see the reaction of your friends to the chirpy sound produced by it every few minutes. In all probability, it will coax them to find out where the sound is coming from. The circuit runs off a miniature solar power panel, which can be taken out from an old calculator such as Citizen CT-500. A panel giving 1.5V to 2.5V is required. Note that the circuit can work properly from...

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EPE Magazines

EPE DECEMBER 2008EPE NOVEMBER 2008EPE OCTOBER 2008EPE SEPTEMBER 2008EPE AUGUST 2008EPE JULY 2008EPE JUNE 2008EPE MAY 2008EPE APRIL 2008EPE MARCH 2008EPE FEBRAURY 2008EPE JANUARY 2...

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e-BOOKS

ELECTRONIC CONCEPTSELECTRONIC COMPONENTSGUIDE TO ELECTRIC REPAIRTEACH YOURSELFEPE MAGAZINESEFY MAGAZINESELEKTOR MAGAZINESSTARTING ELECTRONICS CONSTRUCT...

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EPE December 2008

EPE December 2008Size : 12.6 MBClick the download button to startPassword : electronicsevery...

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EPE November 2008

EPE November 2008Size : 13.9 MBClick the download button to startPassword : electronicsevery...

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EPE October 2008

EPE October 2008Size : 13.3 MBClick the download button to startPassword : electronicsevery...

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EPE September 2008

EPE September 2008Size : 14.4 MBClick the download button to startPassword : electronicsevery...

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FORMULAE

ELECTRICAL CIRCUITSELECTRICITYTIME CONSTANT CALCULATIONNOTATION CALCULAT...

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Laser Activated Switch

Laser Activated SwitchThis circuit is built around a 555 timer using very few components. Since the circuit is very simple, even a novice can easily build it and use it as a controlling device. A laser pointer, now easily available in the market, can be used to operate this device. This circuit has been tested in operational conditions from a distance of 500 metres and was found to work satisfactorily, though it can be controlled from still longer...

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EPE August 2008

EPE August 2008Size : 15.8 MBClick the download button to startPassword : electronicsevery...

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EPE July 2008

EPE July 2008Size : 10.7 MBClick the download button to startPassword : electronicsevery...

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EPE June 2008

EPE June 2008Size : 11.6 MBClick the download button to startPassword : electronicsevery...

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EPE May 2008

EPE May 2008Size : 13.6 MBClick the download button to startPassword : electronicsevery...

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EPE April 2008

EPE April 2008Size : 10.5 MBClick the download button to start Password : electronicsevery...

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EPE March 2008

EPE March 2008Size : 11.2 MBClick the download button to startPassword : electronicsevery...

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EPE February 2008

EPE February 2008Size : 11.9 MBClick the download button to startPassword : electronicsevery...

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EPE January 2008

EPE January 2008Size : 11.4 MBClick the download button to startPassword : electronicsevery...

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Mobile Cellphone Charger

MOBILE CELLPHONE CHARGERCharging of the cellphone battery is a big problem while travelling as power supply source is not generally accessible. If you keep your cellphone switched on continuously, its battery will go flat within five to six hours, making the cellphone useless. A fully charged battery becomes necessary especially when your distance from the nearest relay station increases. Here’s a simple charger that replenishes the cellphone battery...

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Secret Bell

Secret BellMany people move through the corridors and steps in multi storied buildings. As most of them are strangers for the inhabitants of the flats, it becomes necessary to verify the identity of the visitor before opening the door as he can be a burglar. This circuit helps you identify the members of your family. It is basically a switch less musical bell that activates with a single puff of breath. The condenser mic fitted inside the existing...

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Abbreviations from N-Zt

Abbreviations used in Electronics N to TWT N Number of turns in an inductor N Revolutions per minute n Nano (10-9) N Negative nA Nanoampere NC Normally closed NC No connection NEG, neg Negative nF Nanofarad nH Nanohenry nm Nanometer NO Normally open NPN Negative-positive-negative ns Nanosecond nW Nanowatt OP AMP Operational amplifier P Pico (10-12) P Power p Instantaneous power P Positive, also peak PA Public address or power amplifier pA Picoampere PAL Programmable Array Logic PAM, pam Pulse amplitude modulation Pap Apparent power Pav Average power PCB Printed circuit board PCM, pcm...

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