Enough next to your telephone to put a small plastic box, as from the speaker there is a loud voice. The secret here is simple: mounted in the box coil (scheme) “detects” the electrical signals of the phone conversation, coming then a three-stage transistor amplifier with low frequency.“LOUD” PHONE
Enough next to your telephone to put a small plastic box, as from the speaker there is a loud voice. The secret here is simple: mounted in the box coil (scheme) “detects” the electrical signals of the phone conversation, coming then a three-stage transistor amplifier with low frequency.
the First German armored vehicle, created in the 1930-ies, was developed by order of the Supreme command of the Reichswehr on the chassis of the car Adler 3Gd. This rather primitive combat vehicle intended to accompany cavalry and intelligence. It had a welded open top hull of the 8-mm armor. Armament consisted of a 7.92 mm MG 13 machine gun mounted in the middle of the body behind the shield and having a limited arc of fire. Carbureted 6-cylinder engine Adler 6S power 60 HP at 3200 Rev/min dispersed heavy (2,1-t) combat vehicle up to a speed of 50 km/h. Armored car had rear wheel drive and steer front wheels, suspension on semi-elliptic leaf springs and hydraulic brakes. The crew of the armored car consisted of two people: the commander and the driver. Radio stations on the car was and the crews maintained communications via signal flags. As such, the armored car was accepted into service of the Reichswehr under the designation Kfz.13.
Under this title that has become like a calling card, we publish the latest development of the professional engineer and Amateur inventor of the Bicycle (but not only) from the village of Inozemtsevo Galvanoscope district of the Stavropol territory V. M. Gavrilov. This time he invites our readers to design one-wheel trailer — truck.
You can make a simple model of the electric vehicle that will run on batteries. This will require: microelectrochemical PD-12A, flat battery, 4.5 V, two coils of No. 10 without thread, plate size 70X180X2 5 mm, the light from the flashlight, two knitting needles, scraps of wire, pieces of copper, thin cardboard. Prepare also a jig saw, small pliers, electric soldering iron for small jobs. Glue is better to take a synthetic, quickly hardening.
Many readers of “M-K” is familiar with epoxy is an excellent material for wikileak almost universal glue, perfect binding for any kind of fillers. But not all obviously know that epoxy resin has wonderful ornamental material.
Sports car FERRARI 612 SCAGLIETTI release in 2004. The vehicles created by Ferrari, have always existed outside of time. Even today, from the XXI century, cars with a rearing black stallion on the false radiator grille, released in the middle of the last century, look as stylish and modern as in the years of their creation. Yes, and by design, they are not far behind modern sports cars.
Now, not only in large suburban homes or cottages tend to use pokrysheva space as the attic, even in small garden houses are cut in the ceiling hatch and equip the bedroom there (see a similar solution in the materials of the journal “modelist-Konstruktor”: “Garden, one and a half floor”, No. 7, 1997, “a one-story, but with attic”, № 6, 2004).
At the start, during the competition, when all the machines are in several rows lined up in front of the white line, this card is easy to get lost among the brethren. The same wheel, the usual sight for the seat and steering wheel… That’s just the engine it does not emit deafening sounds of firing, and working with a barely audible hum. The reason is simple — on the map instead of the internal combustion engine is an electric motor, powered by the familiar lead battery…