The IR radio control helicopters receiver module delivers at its output an electrical signal whose plot is a true copy of the waveform generated by the remote operated before him. This signal is applied to transistor inverter which adapts the logic level to drive the reset pin of the IC 7555 whic...

The top radio control helicopter equipment can match the impedance of an antenna to the radio impedance (50 ohms standard). The input capacitor voltage is high. The same can be obtained from an old TV or a radio valve at the time. Coils should be constructed as follows:

- The firs...

The rc helicopters circuit burns almost 140 watts is necessary to mount the transistor on a good ventilation system in order to avoid irreparable damage to the component. As always adjust these units is performed from left (input) to right (output).

The input and output wiring must be per...

Find out about the best rc helicopter procedures. You can add amazing features. The first stage is a microphone amplifier with two pins. The gain of this pre-amplifier is given by dividing the sum of the resistance of the potentiometer 100K + on the resistance of 4k7, modifying these values resul...

Not only keychain pocket watch models but other styles have evolved. Yet, all work thanks to the same kind of discoveries and measurements. As stated by experts "the first calendars back to civilization located in the valley of the Tigris and Euphrates, established through the observation of the ...

You can easily understand how to develop a watch. You can start with a basic sundial. This model lead to a pocket watch. You can get in touch with your ability to perform construction. Consider learning by construction.

Types of time measurement

You might want to try to differenti...

The measurement methods of time vary. Thus, you need to consider every single model that has appeared since the beginning of time systems. For instance, pocket watches belong to a great era.

Universal time has a reason. There may be variations, for a specific matter. The difference increa...

You cannot forget about black dresses. Elegant, classy and very sexy, black refines and enhances the silhouette. Fashion never ends and it is easy to carry. The black dress is what saves us when "we have nothing to put on" and gives a chic touch in a blink of an eye. It's definitely one of our be...

Audrey Hepburn in Breakfast at Tiffany's was once wearing a long black dress, sleeveless, while holding a steaming nozzle, or the seductive Catherine Deneuve in Repulsion film presentation, with a pleated black dress? These suits became the personality of the women who wore both, are still listed...

When focusing on little black dress models and other dresses, it is worth mentioning several eras. The romanticism represents a lot! In the early 50's, in the era romantic, feminine aesthetics acquires its most delicate and sublime. The gowns were mostly developed of pale shades and wide necklin...