Ham radio

SVETOOPTIKA! ANY!

26.05.201813.05.2018Himself an electrician

Most machines of lighting effects (AES), including homemade design for the decoration of discos, Christmas and other holidays (see “modelist-Konstruktor” No. 4 and 5 in 1995), can at best give only a reprogrammable combinations of light. Even with all the variety of used circuit design, these devices usually can not at least in a time interval arbitrarily change the order of playable effects and patterns. I offered as my development devoid of these shortcomings.

Solo Pro 319

26.05.201813.05.2018Radio model

The helicopter is equipped with the most detailed and realistic body of the helicopter Sikorsky UH-60. For maximum realism the helicopter is equipped with 4-blade main rotors, making the helicopter not only realistic, but also adds stability in flight. Helicopter applied electronic Flybarless system with three gyroscopes. High-performance brushless motor not only works for a long time without maintenance but also adds power to the helicopter. Patented system of removal of canopy makes it easy to change the battery and maintain the mechanics of the helicopter. RC helicopter Nine Eagles UH-60 is equipped with a gorgeous body scale, unique electronic 3G system with three gyroscopes and four-bladed main rotor.

ANTENNA IN HASTE

26.05.201813.05.2018Himself an electrician

Anyone who at least once in a lifetime chance to deal with wires, you can make original TV antenna (Fig.1) no worse than industrial zigzag.

The idea of this simple device I made in the years of his student life. The antenna was so successful that they continue to use it. The familiar “spread”, and they liked the design, which was given the name “Student”.

SINCE WATERED AUTOMATICALLY

26.05.201813.05.2018Devices helpers

Offer favorite journal I developed a system of automatic watering and spraying plants, well-proven both in the room and in the greenhouse, Conservatory and flower garden. It includes two interrelated processes: “sensor — water” (Fig. 1) and automatic electronic control (Fig. 2). And if the first is easy even going to beginners, the second is better to entrust to those who have sufficient experience and knowledge in the field of electrical and radio engineering.

FUSE-“PHOENIX”

25.05.201813.05.2018Himself an electrician

Overcurrent, short circuit for power supply… To protect against this scourge in the apparatus used old world as the means of fuses. Some are mounted in a special cartridge-holders, others are soldered in the circuit Board that simplifies the design itself, but complicates the replacement of burned out “inserts” healthy.

THE SECOND PROFESSION OF AN ELECTROCARDIOGRAPH

25.05.201813.05.2018Devices helpers

In the process of creating Amateur designs may require tools and equipment that are available it is often difficult. In such cases, comes to the aid of ingenuity, and craftsmen are doing everything they can with their hands. We will talk about how you can make a real recorder-thermoregulator from the old electrocardiograph type ЭК1Т-03M (Fig. 1).

Music game world

25.05.201813.05.2018Devices helpers

Deserved recognition and popularity enjoyed by amateur radio operators is quite simple and reliable circuit includes flip-flop on the two transistors and a pair of thyristors controlled them. It allows you to alternately switch the four incandescent lamps or garlands for the effect of “running lights”.

MULTIMETER MOTORIST

25.05.201813.05.2018Devices helpers

Owners of digital multimeters offer to acquire a homemade console that will allow you to convert the popular M-830 M-832 and their counterparts in the universal devices, capable to become a reliable assistant and service vehicles. In particular, it will be possible (along with the already mastered many of the health check of the relay-regulator, a current measurement battery power and other electrical parameters on-Board network) to quickly estimate the important performance of the ignition system carburetor of the engine, as the crankshaft rotation and angle, open (easily converted into a corner closed) status breaker contacts.

BATTERY — 220!

25.05.201813.05.2018Himself an electrician

Nowadays there are cases of power failure. In such a situation, can save the emergency power supply. For example, from a car battery with a homemade voltage Converter 12/220 V. Saw: stock power is enough for several hours of modern television, the lighting of the lamp or other appliance with power up to 100 watts. The maximum current consumption from a battery does not exceed 11,5 A.

THE TESTER IN YOUR POCKET

25.05.201813.05.2018Devices helpers

By making a mini tester, for several years I use them when repairing household electrical and radio engineering. Assembled by the classical scheme, the device allows with a sufficient accuracy for practice to measure the voltage to 300 V in DC and AC, test resistors, diodes, transistors, and capacitors.