Simple quick charger

Simple quick charger

Shown is the circuit of a simple quick charger , which can quickly charge 1 to 4 nickel-cadmium rechargeable batteries and
can be fully charged in about two hours. The transformer in this circuit mainly converts the 220 V AC voltage into the AC low voltage (9 V) required for normal operation of the circuit . Then it outputs 9V DC
through bridge rectification, filtering and voltage stabilizing circuit (D). IC1 and peripheral components form an oscillation circuit, and the oscillation signal
adds the pulsating charging current to the charged battery through the complementary output circuit (BG1-B04).