Power supply KA7805 how to judge good or bad
All 7805 are LDO (linear power supply), especially with a heat sink, 3 feet, so all xx7805 chip can replace it, as long as the package (physical size) the same. Such as LM7805, MIC7805, AS7805, AIC7805, LT7805, etc., the first two letters that different manufacturers, the same function.
7805 regulator ordinary chip, all the electronic market has. Its role is to 6.5V ~ 15V or so the input voltage is reduced to a stable +5 V voltage.
People face the module side of the word, the middle of the foot and is connected with the heat sink. Left input foot, input 6.5V ~ 15V or so. Right output pin. Outputs a stable + 5V voltage.
KA7805 a total of 3 pins, the input pin plus 9V voltage, measuring the output pin is 5V. Ground pin shared.
