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.
Typical of such devices and other shortcomings. In particular, before charging the batteries should be removed from the apparatus in which they are installed, and then reverse the process, avoiding the “reverse polarity” or short circuit.
Given this, I want to share the technical solution, as they say, to cut the Gordian knot of problems and to standardize the charging of batteries for all portable equipment available in the apartment. We only need to collect at the base of the transformer TVK-110/1 homemade memory Standard, with the following parameters:
Capacity rechargeable batteries A • h……..0,03 — 3
The number of elements
in the battery pack………………….1 — 8
charging In…………………….16 — 17
The device consists of charger, charging cable with two plugs (connected to the same contacts), typically used in 9-volt power supply units (PSUs), and response (charge) parts. Everything here is simple and clear even to the beginner.
Electronic Assembly, assembled on the transistor VT1, — charging indicator. It enables you to prevent an unpleasant situation, when time is spent, and charging did not happen due to bad contact in the battery or the connector.