The display device allows you to control when leaving the home: switched off from electroradiology? If the network is enabled to any load capacity of > 8 W, illuminate both LEDs HL1 and HL2 (see figure).
The brightness is low when the load 8 W (solid dot in the led), so when bright light to see the glow of the need to cover the palm of penetration bright light on the led. The led(s) mounted at the front door. The conductors thereto (0.2 mm) are laid under the Wallpaper (due to the small current flowing through them). Led HL2 can be excluded from the scheme, but if he stays, can HL1 set on the inner side of the door, and HL2 - with outer.
As the transformer T1 using ready-made, have a winding with a large number of turns (2000 -3000, maybe less) and there is a possibility to reel 8 - 10 turns bonding wire of a sufficient cross section. Each the particular transformer the number of turns is selected empirically. These 8 - 10 turns will be the primary winding of the transformer, and the secondary - those that are in the finished transformer. Were tested different types of finished transformers. Suitable for this purpose TCEs 70-C2. However, it should be noted that not all transformers work well in this scheme. The more load, the thicker it should take the mounting wire for the primary winding. The extra winding can be removed from transformer, then there will be more space for the installation of wire winding, the quality of the primary winding of the transformer T1.
The primary winding of T1 include the gap in the wires that supply voltage to the apartment (for example, in the box of an apartment or in the junction box). A necessary condition for the implementation of such connection to the wire of the primary winding was sufficient section (it's under load for basking).
Literature
Author: P. D. Fisher, Kirovograd