On the Parking of campers and motorcyclists will be useful to fluorescent. It gives good coverage and is very economical. As power supply used by the DC / DC Converter transistor type П215 (П202, П217, P4) that can run on batteries.
When using groundwater into the well usually clog a pipe with valve and filter, the latter often out of order. Repair need to get the whole structure. The problem of repair and operation of wells can be solved much easier if you use the following device. The basis of it — sealed the tank with the filter capacity of 35-40 litres and pump “Kama” with the engine of 1.6 kW.
The device was created to check the capacity of Nickel-cadmium and Nickel-metal hydride batteries, but they can check for any small capacity batteries and dry cells. The device is composed of two parts — digital multimeter and active load. The voltmeter consists of a transmitter “amplitude-time” on the element DD1.1 and the transistors VT1 — VT4, generator counting pulses on DD1.2 and pulse counters for DD2 — DD4.
Fans of modeling and all those involved in the processing of wood by hand, useful this simple tool. For its production you will need two boards the size 5X60X120 mm and 15X60X120 mm and two nail length 15 mm. are Then cut with sandpaper, as shown in the figure. In the package you can stack 5-10 sheets, depending on the coating number.
It took me home a few flat rings of cardboard. Cut with scissors for a long time. I have set a goal to make the device comfortable to simple.
Motorcyclists know what a tire puncture on the road. What should I do if I didn’t have the pump? With me this often happened. Here’s what the replacement pump I would suggest. Make type spark plug a simple device (see figure). To inflate the tire, you must first start the engine and turn off the Read more…
The proposed indicator allows you to capture voltage of 6 — 12V (i.e., below the ignition of the neon lamp) and above. In contrast to the known similar kind of indicators, there are no buttons and limit switches measured values, which a wrong selection can lead to distortion of information, and even to failure of the device.
About ten years ago I read in “M-To” article that described the design of the spear gun. Decided using the same principle — a spring as a battery, to make the gun more simple, easy, and good combat. Numerous experiments and fine-tuning have produced the desired result.
About ten years ago I read in “M-To” article that described the design of the spear gun. Decided using the same principle — a spring as a battery, to make the gun more simple, easy, and good combat. Numerous experiments and fine-tuning have produced the desired result.
Difficult one, without an assistant, remove the rear wheel with a rather telogo scooter “Tourist”. All this has forced me to make arrangement — additional support with screw lift: it allows you to quickly, effortlessly and, most importantly, unassisted to dismantle the rear wheel.