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CFL Driver Inverter Circuit

CFL Driver Inverter Circuit

12v CFL Inverter circuit for Emergency Light This is a small power inverter circuit that produces 230v ac at the output through the transformer. The circuit is designed by T.Kalpana. This can be used as the emergency CFL lighting, CFL needs AC input for operating and this circuit provides the AC to CFL. This circuit is very useful for home, […]

Homemade Powerbank using Li-ion 3.7v Battery

Homemade Powerbank using Li-ion 3.7v Battery

Power bank For Mobile/Smartphone What is a Power bank When we go away from home then I face a very common problem, that is power backup of mobile phones. During travelling, it is a very common problem to get regular power backup.  If you’re traveling or out you won’t have a chance to recharge your device, simply plug in your power […]

Over-Voltage Automatic Switch off Circuit

Over-Voltage Automatic Switch off Circuit

Over-voltage Protection circuit using TL431 Shunt Regulator IC This circuit protects from high voltage. Automatic Equipment disconnect when the power cross the level of a fixed voltage. This is a safety device to overvoltage. As per datasheet –  TL431A is the three-terminal programmable integrated circuit. This is a shunt regulator diode. Look like a transistor. This monolithic IC voltage references […]

Solid State Relay With Triac And Optocoupler

Solid State Relay With Triac And Optocoupler

Solid State Relay/ Optocoupler Relay Solid State Relay is a type of switch to activate Load by using without any Mechanical parts. In this there is only semiconductor devices used, no Mechanical coil relay is used to Switching the Connected Load.  Triac is used at the place of coil relay to switch ON and OFF. So this circuit is some […]