Voltage source circuit for driving neon lamp based on 555 timer

The 555 timer is a medium-scale integrated device that combines analog and digital functions. Generally, those made with bipolar technology are called 555, and those made with CMOS technology are called 7555. In addition to single timers, there are also corresponding dual timers 556/7556. The 555 timer has a wide power supply voltage range and can be used in 4.5 Working from V~16V, the 7555 can work from 3~18V, and the output drive current is about 200mA, so its output is compatible with TTL, CMOS or analog circuit levels. It has low cost and reliable performance. It only needs to connect a few external resistors and capacitors to realize pulse generation and conversion circuits such as multivibrators, monostable triggers and Schmitt triggers.