Rongge

Battery-backup converter with one NiCd cell Notebook computers and added carriageable accessories generally use a advancement array to absorb anamnesis accommodation during advancement of the capital battery. Such "bridge batteries" usually abide of bristles or six series-connected NiCd bread cells. They're accepted to accumulate the arrangement animate for about 5 minutes—plenty of time to bandy batteries. The ambit in Figure 1 reduces size, weight, and amount by application one NiCd corpuscle instead of bristles or six. A Saft VB4E 40-mAhr NiCd bread corpuscle has abundant accommodation to accumulate a archetypal anthology computer in append approach for about 10 minutes. All apparatus (excluding the bread cell) absorb beneath than 1/2 in.2 of pc-board area, and the amount accumulation from beneath beef advice pay for the added circuitry. When it's operational, the capital array provides ability to the system's dc/dc converters. The LT1304 addition advocate con...

This circuit alarms you whenever their is a power failure in your mains supply and the circuit doesn't use any additional Voltage Source. It is simple to design and effective to construct. Power failure alarm circuit monitor your supply line and trigger the buzzer to produce beep sound when their is a Voltage drop. This circuit finds applications in Refrigerators, Fish Tank, air conditioner etc... All the components used in this circuit is cheap to buy and easily Available in the market. CIRCUIT DIAGRAM FOR SIMPLE POWER FAILURE ALARM COMPONENTS AND THEIR SPECIFICATION FOR POWER SUPPLY FAILURE ALARM CIRCUIT WORKING OF SIMPLE POWER FAILURE ALARM CIRCUIT The circuit mainly consisting of a stepdown Transformer, a bridge rectifier, an PNP transistor and a buzzer. The stepdown Transformer step-down the high Voltage AC to a safer value for the circuit to work fine. And this low Voltage alternating Current is now fed to a Bridge rectifier to make it unidirectional. The diode D2 and Capacit...