February 2009

19 pieces of white LEDs lamp (220v 1w) LEDs used directly without transformer 220nF 220v mains AC voltage of 400 volts (non-polar) and 4.7mf resistor capacitor 100uF 63 volt capacitor..

Atmel microcontrollers with a good example for the use of DS18B20 DS1302 circuit 2 × 16 LCD display with 4 buttons in circuit adjustments can be made The first button..

An interesting circuit transformer core DC12 volts to DC24 volts dc upgrades have been made obsolete n555 number 3 connected to the output end 2sj302 MOSFETs with opto-up Kubla circuit..

Low-power to run a variety of devices lm2585-adj made ​​with simple solar power system 6V dc converter 15v can be useful Using the LM2585 (NationalSemiconducter), I tried to assemble this..

Embedded ethernet enables microcontroller-based projects to send and receive packets over the network. It contains all the circuits needed to enable 10BaseT communication. The board is designed to minimize the..

Amplifier Circiut Npn and pnp transistors built on 4.5 volts, an amplifier circuit is working with 3 alkaline batteries can be used with LED warning when the battery level drops..

The Capacitance Meter has 4 ranges. In Manual Mode each range has an absolute minimum value and a maximum reading corresponding to a count range of 0 to 16,777,215. The..

A simple thermometer circuit display used to display the value of the temperature sensing for 10 k ntc also relay output the relay can be backed by sustained with the..