Transmission circuit, electronic control unit, and vehicle

A transmission circuit, comprising:

• a first terminal configured to have a first voltage applied thereto;
• a second terminal;
• a third terminal;
• a fourth terminal configured to have a second voltage applied thereto, the second voltage being lower than the first voltage;
• a first variable resistance circuit between the first and second terminals, the first variable resistance circuit being configured to be able to vary a resistance value thereof;
• a second variable resistance circuit between the third and fourth terminals, the second variable resistance circuit being configured to able to vary a resistance value thereof;
• and
• a controller configured to control the resistance values of the first and second variable resistance circuits based on transmission data,
• wherein
• the first and second variable resistance circuits are each a parallel circuit of a plurality of series circuits of a resistor and a switch,
• the first variable resistance circuit includes a first charge adjuster configured to absorb and discharge electric charge with respect to at least some of a plurality of switches in the first variable resistance circuit, and
• the second variable resistance circuit includes a second charge adjuster configured to absorb and discharge electric charge with respect to at least some of a plurality of switches in the second variable resistance circuit.