flow control valves

flow control valves

PCB Booster tube and light flow control valves using 12AU7

A 12AU7-based booster and light overdrive running at 9 volts.  A very fun little circuit that has a minimal parts count and actually generates a good amount of boost and some overdrive.

You can even run this one of a 9 volt battery if you don’t mind chewing through batteries Smiley Otherwise, and 9 volt adaptor will be fine.