汽车电池充电器电路doc.docx

汽车电池充电器电路 (Car Battery Ch
arger)
作者：佚名 来源：本站整理 发布时间：2009-12-29 9:03:26 ［收 藏］［评 论］
3|汽车电池充电器电路 (Car Battery Charger)
This charger will quickly and easily charge most any lead acid battery. The charger deli vers full current until the current drawn by the battery falls to 150 mA. At this time, a lower voltage is applied to finish off and keep from over charging. When the battery i
s fully charged, the circuit switches off and lights a LED, telling you that the cycle has
finished.
Schematic
Parts
Part
Total Qty.
Description
Substitutions
R1
1
500 Ohm 1/4 W Resistor
3K 1/4 W Resistor
R3
1
1K 1/4 W Resistor
R4
1
15 Ohm 1/4 W Resistor
R5
1
230 Ohm 1/4 W Resistor
R6
1
15K 1/4 W Resistor
R7
1
Ohm 10 W Resistor
C1
1
25V Ceramic Capacitor
C2
1
1uF 25V Electrolytic Capacitor
C3
1
1000pF 25V Ceramic Capacitor
1N457
Diode
Q1
1
2N2905 PNP Transistor
U1
1
LM350 Regulator
U2
1
LM301A Op Amp
S1
1
Normally Open Push Button Switch
MISC
1
Wire, Board, Heatsink For U1, Case, Binding Posts or Alligator Clips For Output
Notes
The circuit was meant to be powered by a power supply, which is why there is no t
ransformer, rectifier, or filter capacitors on the schematic. There is no reason why you
cannot add these.
A heatsink will be needed for U1.
To use the circuit, hook it up to a power supply/plug it in. Then, connect th