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 […]
We like to collecting the electronic circuits with PCB layout as ideal of building the Easy electronic projects, under different scenarios.
The projects are mostly old but still works great. Suitable for use or to study.
Now, We have a lot of articles(over 600 circuits). So, difficult for find the circuit as you need. It is a pity if you close this site without the great experience.Recent New Posts
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 […]
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 […]
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 […]
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 […]
This is The small tweeter speaker protection circuit It can be packed into any speaker cabinet, and does not require a power supply as well. Normally high powered audio system. Internal circuitry prevents speaker damage with always packed.It focuses woofer speaker protection. But when we listen to a lot of treble. Or high frequency speakers […]
We used the two LED flasher with transistors only. Today we come to experiment the three LED flasher as Figure 1 that also used astable mutivibrator with three transistors. They are used to drive all LEDs. The Flash rate of LED1-LED3 in each frequencies output are easily changed simply by changing one, or three of […]