Three-terminal regulator input and output terminals

Care must be taken when in use: (VI) and (Vo) between to 7805, for example, the three-terminal regulator fixed output voltage is 5V, while the input voltage is at least greater than 7V, so that the input / output between 2-3V and above pressure. The adjustment tubes guaranteed to work in the enlarged area. But electri cenergy meter to obtain large, the power Circuit breaker will increase manifold, so the two should be taken into account, ie, both to ensure the maximum load current when the regulator does not enter saturation, but not so power consumption is too large. Another general in three air circuit breaker input and output is terminated with a diode to prevent the input is shorted, the output stored charge through the regulator, and damage to the device. Uses: general regulator and the regulator uses three tubes are the same, both for the control board voltage regulator circuit. Circuit voltage is too high to prevent burning.