How to convert 5v and 40mA from arduino to ~175v and 1.5mA?

Question

Circuit design

Hello. For some reason, I wanted to buy gas-discharge indicators - IN-17. Here it has arrived. There is an Arduino Uno, which outputs 5v and 40mA (it seems that it will be necessary to accurately measure). While the goal is simple - to light! At this stage, I use Arduino as a simple source of direct current. In general, the question is how to make a current converter? So far, a noob in these matters, what is usually used in such cases?
At this stage, the simplest and cheapest solution is of interest, the size / weight does not matter yet. You just need to understand where to dig.

Answer 1

The simplest and most crude is the blocking generator. It is assembled literally from nothing: a transistor, a transformer (wound with thin enameled wire on any suitable core), and current-limiting resistors. Actually, everything.
You can search for a suitable converter circuit.
CAREFULLY! The output will still be high voltage! To kill - will not kill, but will bite unpleasantly.
By the way, in your case - the input and output parameters do not match.
5V * 0.04A = 0.2W (<) 175V * 0.0015A = 0.26W
And plus less than 90% efficiency.

Answer 2

Well, crap. If you need to control such indicators, then take a transformer, and let the arduino control the voltage supply through an optocoupler or, at worst, a transistor.