As a hobbyist designer with years of experience and a former captain of the regional team sports radiointerview (the hunt for “foxes”) offer a development designed to significantly improve the organization and conduct of training, competition, as well as to facilitate to beginners the way to the fascinating world of radio sport. In essence, this is a homemade compact and reliable transmitter “Fox” (PL). However, it is assembled by an improved wiring diagram, with keying in the power circuit of the crystal oscillator (Fig. 1).
THE TRANSMITTER FOR “FOX”
In a plastic closure device of the toilet tank over time, visibly worn hole under the axis of the float arm. This violated the density of the locking valve and the water continues to seep into the tank even after filling, resulting in “flooding.”
For works in chemical laboratory hydrogen is produced usually by the reaction of zinc with hydrochloric acid (HCL). Sometimes you need a small amount of gas, and 1 g of zinc makes about 400 ml of hydrogen, so that, using part of it, the rest have to release into the atmosphere.
The prototype of the computer mouse — a two-dimensional analog of the manipulator, connected to a personal computer (PC or PC) via the serial port corresponding to the RS-232 standard, and is equipped with a couple of buttons on a convenient and compact housing, is a device created almost 40 years ago at the Stanford research Institute and has incorporated a number of principles, authored by the famous inventor Douglas Engelbart (Douglas Engelbart). In appearance it is a wooden box with a “tail” — a communication cable. Obeying the movements of the operator’s hand, sneaking on the table on wheels, counting their speed and turns, this device is like sniffing the information that was immediately entered into the computer and controls the cursor movement on the screen. Indeed, what is not nosy mouse!..
Music lovers understand the interest shown by people of different ages and professions to all new in the field of stereophony. The development of electronics and improvement on the basis of sound engineering techniques have enabled the lovers of house concerts to listen to gramophone records and tape recordings with a sound quality close to natural. Stereo replay system allows to obtain aesthetically the most complete and accurate representation of the executable composition, all the colors, the nuances that are sought to convey in a recording musicians.