MiniBar 15-16 Crowbar Circuit - Basic

Protect your radio from Power Supply Failures.  This is a crowbar circuit that is designed to trip at 15 or 16 volts.  The circuit is designed to work with typical power supplies operating at 13.8 volts, with vehicle charging systems, or with lithium battery systems while being charged by AC or solar charging systems. In his April 2025 column, Joe Eisenberg, K0NEB said:  "...and if it weren't for the WA2IVD Minibar kit, I would have damaged my IC-7300."  Check out Joe's Kit-Building column in The Spectrum Monitor magazine at: https://thespectrummonitor.com/ The basic kit  includes the circuit board with the surface mount components pre-populated.  The circuit board contains the fully functional crowbar circuit, including output and fault LEDs. You can add connectors and a fuse holder of your choosing.  you can also hardwire it and use an external fuse.  Instructions are provided for several connection options.  The Basic Kit can be built into DIY Power Supply or Power Distribution pr