imple battery charger circuit with voltage charging.
The complete emergency lighting circuit is shown as circuit diagram below. Which core of the circuit is a simple charging system.
- Start the electricity AC220V 50Hz of house is entered through F1 (Fuse 1 Amp) to prevent damage. If the circuit malfunction.
- Later, pass through the switch S1 is turned on – off circuit.
- And the transformer T1 converts the voltage from AC220V to AC15V that voltage is also AC.
- When passed to the set of 4 diodes bridge D1-D4 into the direct current voltage (DC).
- But electric current is not smooth, Therefore the capacitor C1 is a smoothing filter power up.
- LED1 be used to display the power on of the circuit which R1 is a current limiting that suitable for LED1.
- The DC electric current to the transistor Q1 is connected as regular circuit. To control both the voltage and current properly. For charging the battery.
- The diodes D5 prevents flowing back of the battery’s current into the the circuit again.
- The volage regulated are controlled to a constant, by value diode zener ZD1 15.6V, with the output voltage will be 15V (low voltage of the zener diode 0.6V).
- While battery voltage is zero volts or no power, R3 is used to set the maximum current of the circuit is about 500mA.
- the circuit will charge current battery steadily When the voltage of the battery, the charging current is reduced.
- Until the battery voltage is 13.8V or to full charge. The charger will not stop charging circuit as other
But current is flowing through the battery charge is low at about 100mA. To compensate for the loss of the battery to full power always.
- Normal relay contacts to the battery charging circuit. As any power failure, it will switch to battery connected to a load or a light bulb instead. And before to cutting the S2 switch on the lights to activate or not. When the electric current failure up.
imple battery charger circuit with voltage charging.
The complete emergency lighting circuit is shown as circuit diagram below. Which core of the circuit is a simple charging system.
- Start the electricity AC220V 50Hz of house is entered through F1 (Fuse 1 Amp) to prevent damage. If the circuit malfunction.
- Later, pass through the switch S1 is turned on – off circuit.
- And the transformer T1 converts the voltage from AC220V to AC15V that voltage is also AC.
- When passed to the set of 4 diodes bridge D1-D4 into the direct current voltage (DC).
- But electric current is not smooth, Therefore the capacitor C1 is a smoothing filter power up.
- LED1 be used to display the power on of the circuit which R1 is a current limiting that suitable for LED1.
- The DC electric current to the transistor Q1 is connected as regular circuit. To control both the voltage and current properly. For charging the battery.
- The diodes D5 prevents flowing back of the battery’s current into the the circuit again.
- The volage regulated are controlled to a constant, by value diode zener ZD1 15.6V, with the output voltage will be 15V (low voltage of the zener diode 0.6V).
- While battery voltage is zero volts or no power, R3 is used to set the maximum current of the circuit is about 500mA.
- the circuit will charge current battery steadily When the voltage of the battery, the charging current is reduced.
- Until the battery voltage is 13.8V or to full charge. The charger will not stop charging circuit as other
But current is flowing through the battery charge is low at about 100mA. To compensate for the loss of the battery to full power always.
- Normal relay contacts to the battery charging circuit. As any power failure, it will switch to battery connected to a load or a light bulb instead. And before to cutting the S2 switch on the lights to activate or not. When the electric current failure up.
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