220 watts Uninterruptible Power Supply

220 watts Uninterruptible Power Supply
Uninterruptible power supply provides output power to 220 watts (load current up to 1A). In the mode switch SB1 12/220 - the battery voltage is applied to a given multivibrator Q3 Q4 50 Hz, which builds up powerful keys Q1, Q6, amplified and fed to transformer T1. With the secondary winding T1 voltage of 220 V and 50 Hz filters L1 C1 C2 goes to the load. (more…)

Simple Uninterruptible Power Supply (UPS)

Simple Uninterruptible Power Supply (UPS)
This schematic is simply a basic system of UPS (uninteruptible power supply). The main schematic gives a continuous regulated 5 Volt result with an not regulated 12 Volt supply. Regarding electricity line fail the battery will take control, without any surges within the regulated supply. Notices: These schematic may possibly customized for the purpose of different regulated and even unregulated voltages with the use of different regulators and rechargeable batteries. For a about 15 Volt regulated supply use a