Redundant Pulse Height Discriminator
Richard H. Wagner · IEEE Transactions on Nuclear Science · 1964
A semiconductor pulse-height discriminator and driver amplifier was developed which will operate reliably for long periods of time aboard unattended space craft. Adequate threshold stability under variable temperature and supply voltage conditions is provided by a new tunneldiode circuit. Active parallel circuit redundancy is employed to enhance reliability. The resulting circuit tolerates opens or shorts in any of the semiconductors with little performance degradation.