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.PROBE FROM SYRINGE
Excellent probes for the tester and other measuring instruments are obtained from … disposable syringes. To do this, in the bottom of a plastic cap with an awl is pierced through hole, and the plastic part of the needle is cut off (shown dashed). Remains dull the needle with a needle file, and to the Read more…










