Voltage regulation circuit, electric signal detection circuit and electronic equipment

The invention discloses a voltage regulating circuit, an electric signal detection circuit and electronic equipment, the voltage regulating circuit is used for regulating the voltage of a first interface, and the voltage regulating circuit comprises a resistance branch, an operation branch and a regulating branch. The resistance branch is connected with the first power supply, the resistance branch is configured to be a branch with an adjustable resistance value, and adjustable voltage is output based on the voltage of the first power supply. The operation branch is connected with the first reference voltage, the first interface and the adjusting branch, and the operation branch is configured to perform operation based on the first reference voltage and the voltage of the first interface and output a first signal to the adjusting branch. And the adjusting branch is connected with the resistance branch, and the adjusting branch adjusts the resistance value of the resistance branch based on the first signal so