v to 3v circuit design diagram: three-terminal voltage regulator: three-terminal voltage regulator, there are two main kinds, one output voltage is fixed, called fixed output three-terminal voltage regulator, the other output voltage is adjustable, called adjustable output three-terminal voltage regulator, the basic principle is the same, all use series type voltage regulator circuit.
2, will obtain positive and negative symmetric adjustable power supply, the output voltage value is continuously adjustable between ±6V ~ ±15V, can achieve the purpose of synchronous adjustment.
3, cw7812 is a regulator block, its regulator voltage is 12 volts. The following is its voltage regulator circuit connection diagram: 7812 voltage regulator input voltage can not be too large, generally around 15 volts is good, if the input voltage is too high, the pressure regulator of the pipe is too heavy, easy to heat, even hot, easy to burn.
The working principle is that when the input voltage changes, the voltage regulator chip will detect this change and adjust the output voltage to keep it at a specific voltage level. The voltage regulator chip usually consists of a comparator, an amplifier, and a feedback circuit.
Three-terminal voltage regulator A three-terminal voltage regulator is an electronic device that controls the output voltage by comparing the input voltage with the reference voltage. It usually consists of three parts: the input, the comparison circuit and the output.
Voltage regulation principle The voltage regulation principle is an electrical principle, which refers to the current in the circuit changes with the load under stable voltage conditions. In the voltage regulator circuit, the output voltage can be kept stable by controlling the current in the circuit.