Compact electronic controller, enabling a smooth and in a fairly wide range to change the brightness of the incandescent filaments, power water heater or the speed of rotation of the shaft of the AC motor, can make even inexperienced hams. Because the proposed device is familiar to many publications previous unique and well-proven technical solution: the triac with economical control by pulse-phase method. Besides the principal circuit diagram complements fleshed out a printed circuit Board with specification of the layout of the installation. And radio the design used is quite common.
TRIAC CONTROLLER
As you know, the cost of electrochemical cells has increased significantly. Therefore, many owners of portable radio equipment are beginning to use batteries. And they must be timely and properly charge. Of course, when the apparatus used a bit (and besides, it is all the same type), the problems with no charge. After all, to get a good charger (memory) for a renewable source of electricity in a single “radioimage” is much easier than, say, to ensure the viability and flashlight (and it 2хД-0.55 C), and all-wave receiver (5хД and 0.26 D), and tester (Sht-0,06). In addition, note that the proposed market memory in the majority of the road is not very reliable, is designed only for a certain type of batteries, and a strictly fixed number of elements.
The proposed electrosurgery, I am sure, will find its rightful place in the kitchens have gas stoves, when the ignition of the gas burner appliances and other devices with the “blue fuel”. It is convenient and trouble free. It can make for a night or two, pre-armed with a small piece of one-sided foil fiberglass and a minimum of inexpensive and common parts. A faithful guide to action will serve as a sketch of the printed circuit Board and Assembly drawing.
I made welding machine is a well-proven in practice a modernized version of the device description and drawings of which are published in the journal “modelist-Konstruktor” No. 3, 1966. Most importantly — new “svarochnik” significantly more powerful than its predecessor, easier to manufacture and operate. In the absence of the kind of “bells and whistles” it allows you to securely connect steel sheet with thickness up to 3 mm. However, the mode of operation is one of the most necessary most homebrew spot welding.
Familiar to many hams, the situation: once the scheme is built, configured, but… to Squeeze it into some kind of “soap” not want to, but new to “diamond” the right frame there is neither time, nor forces. Had to find a way out of similar situations and me while in one of the publications, “Model construction” did not find a clue. It turns out that enterprising and slopestyle Siberians, which wrote the log, began the production of fine gift boxes of foil materials commonly used in the manufacture of printed circuit boards. Moreover, the simplest technology: the workpiece-scan in the field of future folds (from the base-insulator), they made cuts, and after giving it a box shape was probabaly foil joints.
