I need to build a boost converter (step up to 30-40V
20mA to drive a IV-18 VFD) and have found three alternatives.
Alt 1. 555 IC, Inductor, Diode and capacitor (http://www.benjscott.com/2009/07/555-boost-converter/
I tried alt 1 this week and it worked fine. By modify the frequency on the 555 I could change step up voltage easy.
First try I got 120V from 5V
Bought 10 pieces of MC34063 from ebay. Never used them but should be able to work as a step up converter to 40V.
Alt3. Voltage tripler circuit (http://www.electronics-tutorials.ws/blog/voltage-multiplier-circuit.html
If I could find a 12v AC/AC adapter, I could triple the voltage to 36V DC.
What is the pros/cons with the three alternatives?