In this circuit we have the voltage multiplied by 5, obtaining between 50 and 80 V output when the input voltage varies between 10 and 15 V. Note that the energy conservation theorem is valid here, as in any other case in that such transformations occur. The higher the output voltage, the lower the intensity of the current obtained. The operating frequency depends on R1 and C7, components that may have their values changed in order to obtain better performance. It is also important to note that other inverters can be used in the same configuration and that several of these steps can be combined to further increase the output voltage. For example, by connecting D6 to the input of a step with six more inverters (without oscillators), we can multiply the input voltage by 10, yielding between 100 and 150 V output when the input voltage varies between 10 and 15 V. Such a circuit can perfectly be used to light a neon lamp in series with a 220 k ohm resistor at 1 M ohm in a signaling system.
