When we use digital circuit at the level voltage 5V. but if want voltage the size is 30VDC can don’t difficult. By use DC TO DC Converter Circuit at use the integrated circuit digital inverter gate 74HC14 perform pulse oscillator high frequency change the equipment LC boost up voltage be 30VDC get. Which see the circuit then to use the equipment , build easy certainly. But be defective be give output current lowness. The detail is other , please see in original website. link