CircuitGeek

The main function of heat sink is to absorb and dissipate as many heats as it can from another object, by using thermal contact, where it can be either direct or radiant. Heat sinks are being used in a wide range of applications, wherever the efficient heat dissipation is needed. Many household electrical appliances contain [...]

When building a security system it is handy to use a back up power supply in case the burglars turn off our house electricity. If this happens this circuit quickly switches to backup battery. When mains restore the circuit automatically switches back to mains and charges the backup battery. Circuit is fairly simple with easy [...]