This soldering station is  designed to control the temperature of soldering gun Solomon SL-1 and other similar soldering devices with integrated thermocouple. DC voltage generated by thermocouple is amplified by operation amplifier CA3140.The precise regulation and excellent small hysteresis of temperature is obtained by voltage stabiliser LM723M (military packaging). LM723M contains an embedded temperature stable [...]

Generator functions, or forms of waves, such oscillators are producing alternating voltages of different shape which correspond in appearance to a mathematical function.They can be sine, rectangular, triangular, in the form of stairs, etc.. Applied in analog and digital electronics, the measurement and experimental techniques, for educational or professional purposes and as a laboratory device [...]

The small electronics with a few transistors and a few passive components will revive a dozen of small LED sparksdeployed in the shape of the flame of the Christmas tree candle .Failed attempt to blow off the flame, like a birthday cake, now become reality. Accumulated air in the children’s swollen cheeksmake magic explosive “puff” [...]

If you want to connect your PC to your house cinema, built VGA to VIDEO Converter.The device is suitable for watching movies, performing video presentations and advertisements from a computerthat does not have video composite output signal.Conversion is a stable, high resolution and high image quality in terms of brightness, contrast and saturation of colors.Most [...]

Most older engines, and many newer ones, have timing marks in the form of a line marked on the rim of the vibration damper.Some engines in front-wheel drive vehicles have timing marks on the flywheel. A pointer is attached to the timing cover.When the mark is exactly under the pointer, the engine is ready to [...]

Phil from jumperone.com he wanted to try to write software for Microchip PIC16F883 microcontroller and he couldn’t find simple development board for it. And so he decided to made own development board. Source: jumperone

If you want to give life to the old table lamp, replace the orange “hot” light with a clean, “cold” and white, built the project with white LED diodes as the light source matrix.The continuous change of the light source you can build the proposed electronic-switching regulator in pulse width modulation.Associate surrounding red light only [...]

If you want the dynamics of the music signals to visual representations of 20-segment LED indicator bargraf covering a dynamic range of 60dB, you are the right place.   Designed as an attractive desktop VU meter for home audio, has its own power supply, linear frequency range and excitement of the speaker directly. Simplicity, low [...]

The proposed solution for protecting, protects connected consumers with a complete shutdown of their power. Growth failure, be it through positive or through negative part of power leads to complete exclusion from the power supply voltage of connected devices: laboratory sources with symmetrical voltage power supplies, battery chargers, low frequencies amplifiers, stabilized or no stabilized [...]

Guys from Youritronics.com made a new project 74HC4051 Analog Multiplexer. They have a job to measure the temperature of 32 thermistors (NTC) with microcontroller and later process the data. With just four 74HC4051 they made multiplex 32 input channels to 4 outputs.

Overcome the fear of losing flying model or a model that forced landed. The touch down aircraft model is easier to findin dense shrubs and branches where acoustic marked. Electronic device for acoustic localization produces penetrating acoustic signal with two tones that will sound when the aircraft will lose telecommand signal. Anxiety and fear of [...]