Deprecated: mysql_connect(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead in /home/freehos1/public_html/projectus/core/open_close_dbase_connection.php on line 0

Deprecated: Function split() is deprecated in /home/freehos1/public_html/projectus/Solar-charger/index.php(0) : eval()'d code on line 22

Deprecated: Function split() is deprecated in /home/freehos1/public_html/projectus/Solar-charger/index.php(0) : eval()'d code on line 35

Deprecated: mysql_connect(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead in /home/freehos1/public_html/projectus/scripts/get_ad_type_position.php on line 0

Deprecated: mysql_connect(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead in /home/freehos1/public_html/projectus/scripts/load_ads.php on line 0

Deprecated: mysql_connect(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead in /home/freehos1/public_html/projectus/scripts/sponsor_found.php on line 0

Deprecated: mysql_connect(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead in /home/freehos1/public_html/projectus/scripts/load_links.php on line 0

Deprecated: Function split() is deprecated in /home/freehos1/public_html/projectus/Solar-charger/index.php(0) : eval()'d code on line 161

Deprecated: Function split() is deprecated in /home/freehos1/public_html/projectus/Solar-charger/index.php(0) : eval()'d code on line 164

Deprecated: Function split() is deprecated in /home/freehos1/public_html/projectus/Solar-charger/index.php(0) : eval()'d code on line 167
circuit for battery charge level monitor
projectus.freehost7.com:UG and PG level projects,mini projects and many more here ...



 

 

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