This circuit is from a 1968 documentation. It makes use of thermistors (NTC) to indicate overheating of charged batteries. Modern equivalent components can be used.
This circuit was found in an old European documentation. When R2 is cut off the circuit triggers...
August 2017 - Bourns Multifuse AEC-Q200 PTC resettable fuses can be obtained from Mouser...
September 2016 - Mouser Electronics is providing new ultraviolet LEDs VLMU1610 of Vishay suitable...