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 The screen protector for glass LCD laptop.

Wednesday, March 5th, 2014

Now A laptop computer has a LCD screen is glass panels. Which have high colorfully and contrast.The disadvantage is reflected into our eyes. So annoying. New Asus laptop AC-400 of me same them. I solved the problem by installing a screen protector. As Figure 1 Features: .Anti glare .Anti fingerprint .Anti UV .Anti Scratching .Easy […]


 Automatic led night light switch

Wednesday, March 5th, 2014

This is the night lighting system with LED display, and from battery power. Because the house is not convenient plug So the charging system with a solar cell. Moderately convenient to use. At night, the LED lights up and LED daytime off and electricity from solar cell charged a 12-volts battery. The guidelines circuit design […]


 CD4069 inverter gate circuit

Sunday, March 2nd, 2014

A CD4069 consists of six inverter gate circuit in 14 DIP packets. It is made with CMOS technology so can be use on wide supply voltage range : 3.0volts to 15volts,low power consumption, high noise immunity: 0.45Vdd typ. And Low power TTL compatibility: Fan out of 2 driving 74L or 1 driving 74LS This is […]


 New projects and update : Sat 01 Feb 2014

Saturday, March 1st, 2014

LM383 is Linear 7-watts Audio Power Amplifier in TO-220 package. The tweeter speaker protection circuit Three led flasher by 3 transistor astable multivibrator How to modify adapter for philips Electric shaver More Email Before New projects and update : Mon 17 Feb 2014 New projects and update : Thu 06 Feb 2014 New projects and […]


 LM383 is Linear 7-watts Audio Power Amplifier in TO-220 package.

Wednesday, February 26th, 2014

It is a high power amplifiers suited for automotive application or many car systems. (14.4-volts supply) and use high current capability of 3.5-amps. It is current limited and thermally protected. Connection diagram The Features – High peak current capability (3.5-amps). – Large output voltage swing. – Wide supply voltage range (5V-20V). – Typical Single Supply […]



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