This project involves making several modification to an early 1960s era Victoreen CDV700 or CDV600-6B geiger counter. These counters are available on E-Bay for around $50 to $100. The modifications use modern electronic parts to improve the counter`s stability, extend the run time, and add a solar recharging capability.
Circuit modifications include:
* Conversion to a single 5-cell NiMH rechargeable battery pack.
* Adding a voltage regulator to the geiger counter`s main supply.
* Adding a secondary voltage regulator to the 3V supply.
* Adding a