This circuit sketch shows how to turn body-diode lemons into lemonade ... the circuit performs as a PWM DC/AC inverter. Q1 & Q2 get PWM from the control block, while D1 & D2 together with Zener D3 ...

Diodes close diode An electrical device that allows current to flow in one direction only. are electronic components that can be used to regulate the voltage in circuits and to make logic gates.