User manual

33
9. Impulse Charging
Test setup: USB cable, plug board, ashing LED, LED orange, diode 1N 4001,
transistor T1 2N3904, transistor T2 N3906, resistor 10 Ω, 2 resistors 1 kΩ, battery
holder, rechargeable battery AA mignon or AAA micro
Impulse charging mostly prevents the memory effect even in older rechargeable
battery cells. Short current surges will charge the rechargeable battery cell. The
rechargeable battery is charged faster or more slowly depending on wiring. Older
rechargeable batteries may also be regenerated.
Fig. 032: Test setup for impulse charging; both transistors are plugged in so that
the type designation can be read by the observer. The upper transistor is T2
(2N3906), the left LED is a ashing LED.