The purpose of the present invention is to provide a gate drive circuit using a simpler circuit and equipped with a faster switch circuit, while suppressing cost increases. The gate drive circuit drives a semiconductor switch on the basis of a control signal. The gate drive circuit is provided with: an input terminal; a high-side switch connected to a positive-side power supply; a low-side switch connected to a negative-side power supply; a first differentiating circuit which is connected to the positive-side power supply and which differentiates and supplies the control signal to the high-side switch; a second differentiating circuit which is connected to the negative-side power supply and which differentiates and supply the control signal to the low-side switch; an output terminal for outputting a driving signal; a first impedance circuit connected between the high-side switch and the output terminal; and a second impedance circuit connected between the high-side switch and the output terminal.