Circuit Redesign Cools Smokin’ Stereo
Engineer Andy Morris was having problems with his Chinese-made stereo sets — namely overheating. While the mechanical engineer’s solution would likely be the addition of massive heat sinks or gobs of thermal grease, Morris is an EE — so he created a new circuit to cool things down:
“The problem was that a voltage regulator had to drop the 18 volt main power supply voltage to 8 volts at 500ma to power the CD player, wasting 5 watts of power and causing a lot of heat inside the compact unit. This circuit acts as an interference-free pre-regulator to greatly reduce the power loss.“
Click here to view Morris’ interference-free pre-regulator circuit.