POWER SUPPLY CIRCUIT AND ELECTRONIC DEVICE

A power supply circuit and an electronic device. The power supply circuit comprises at least two power supply modules. A rectification output end (0O) and a thermoelectric standby output end (1O) are electrically connected and then are electrically connected to a primary low-voltage input end (2I); a primary low-voltage output end (2O) is electrically connected to a primary control input end (4I) of a primary control module (4); a primary low-voltage power supply module (2) is coupled with a secondary low-voltage power supply module (3) by means of a low-voltage transformer; in response to the primary control module (4) receiving a power supply fault signal sent by a rectification module (0), a circuit starting signal is sent to a thermoelectric standby module (1), so that the thermoelectric standby module (1) generates electric energy and then inputs the electric energy to the primary low-voltage power supply module (2) so that the primary control module (4) maintains working; and the primary control module