Circuit for Battery charge level monitor
So we modify this circuit to suit our needs.
The reference can be set by
calibrating with a 15V supply. The lower limit for battery is 10.1V(full
discharged) and higher limit is 13.8V(maximum charge). The circuit thus gives
the voltage level in LEds. The number of LEDs active at anytime gives the
Voltage across battery and hence the charge level of the battery.
After proper calibration, the voltage is given by: N*(13.8-11.9)/10
The charge level is thus represented in the circuit.
Inverter
To allow for full versatility, we decided to facilitate 220V AC output from the
battery. The inverter is built around the 2N3505 power transistor which allows
for an output power of 300W. The circuit is
basically a astable
multivibrator which produces an alternating squarewave output. This alternating
output is supplied to a transformer to get true 220V AC 50HZ output.
|
Transistor |
2N3055 |
2 |
5 |
|
Tantalum Capacitor |
68uf |
2 |
80 |
|
Resistor |
180E,1W |
2 |
1 |
|
Resistor |
10E,5w |
2 |
5 |
|
IC |
IN4007 |
1 |
|
|
Transformer |
12v/1amp/center tap |
1 |
95 |
Circuit for to get 12 V
