Friday, May 31, 2013

Wiring Regulationsinspectiontesting Certification

Iee Wiring Regulations.Iee Wiring Regulation.Of Iee Wiring Regulations Part P Building Regulations 17th Edition.An Amendment To Bs 7671 2001 The Iee Wiring Regulations States That.Iee Wiring Regulations Inspection Testing And Certification Iee.17th Edition Iee Wiring Regulations...

Friday, May 17, 2013

9V Portable Headphone Amplifier

After several requests of the correspondents, the decision to design a headphone amplifier 9V power was finally taken. The main requirement was to feed the circuit by a common, PP3 (transistor radio) alkaline batteries. Therefore, the circuit implementation of a low current draw...

Monday, May 13, 2013

Sequential Turn Lights Driver

This device was designed on request and allows sequential operation of four Leds either to left or right direction, obtained by means of a 7555 CMos timer IC (IC1) wired as an astable multivibrator driving a Decade counter (IC2). This IC is set to count a sequence of four by connection...

Sunday, May 5, 2013

5 8 Watt Audio Power Amplifier

This circuit use TA7222AP to amplifiers audio signal .The price only $0.99 and can provide 5.8 watt with Muting Control.Power supply can use for 8-12Vdc it is a good idea to use for car audio power amp , coin-op machine game, security system etc. ...