Rangkaian Power Supply - UPS circuit is a simple form of the commercial UPS, the UPS circuit provides a constant 5 volt regulator output and unregulated 12 volt supply. In the event of electrical supply line failure, then the battery will take over . Some time ago, I do have to repair if UPS can not store electricity.
UPS circuit adapted for other voltages are regulated by using different regulators and batteries and are unregulated . For 15 volt regulated power supply with two 12 - volt batteries in series, and 7815 controllers . There is a high degree of flexibility in this circuit.
TR1 is a primary and to the local electricity supply is 220 volts Suitable . The secondary winding should be designed for at least 12 volts at 2 amps , but may be 15 volts higher , for example. FS1 is a slow type and protects against short circuit on the output , or even a faulty cell in a rechargeable battery. 1 LED light only when a power supply is turned off , the electrical connection failure of the LED on and holding the output voltage of the battery. UPS circuit simulates working with main applied electric circuit .