Hi all, thank you all for the great effort you put to help us. I hope that anybody can help me to found a vibrating alarm (Like Mobile Telephone) controlled by Microcontroller PIC and triggered according to signals coming from the piezoelectric sensors to this PIC

this wat u look

Everything-that-moves ALARM
author: Thomas Scarborough

A crucial failing of proximity detectors is their unreliable and tricky nature. This is where they are used to detect humans, not to speak of smaller living beings. One common approach is to detect eddy currents in a living body, which are induced in the body through a.c. mains wiring. However, such circuits become altogether unusable in the case of mains failure, or in the absence of mains electricity, or even where adjacent mains circuits are switched in and out.

اي
انا اقصد تحويل من 220 الى 15 فولت دي سي

مع وضع ارقام المقاومات والدايودات والمكثف وغيره

وقد اكون لك ممنوناً وشاكراً اخي ..
جزالك الله خير

ok this schematic controll out put from 5 V DC TO 15 V DC


between 5 to 15 volts.

م. الحربي السلام عليكم

اريد دائرة جهاز تعمل على قطع اشارة الجوال
وذلك لاستخدامها في المساجد وشكرا

Thanx very much and keep walking !

hello every one ..
i need a circuit with block diagram ( single phase 220VAC to three phase inverter ) also i wana inverter circuit from 12VDC to 220VAC thanks alot i also need circuit for induction motor by using IGBT chip to control the frequincy of the motor speed thanks alot

tester
i

HI ALL HERE SCHEMATIC RADAR DETECTOR


1986

الله يزيدكم شكرااااااااااااااااااااااا

PWM DC Motor Speed Control

Power this project from sunlight with a CirKits solar power circuit board kit.

this easy for u

DC Motor Control Circuit

Here is an experimental (and simple!) regulator for alternator chargers.