Temperature interface (CB20543E)

This temperature sensor shield or interface was found in a PC English documentation from 1996.

LM308 Fast Adder Amplifier (CB4488E)
This circuit is from the 1993 Motorola Linear Interface ICs. Equivalent operating may be used and...
Dual transistor reflex receiver (CB20566E)
This reflex receiver was obtained from a 1963 documentation. The transistors are germanium, and...
Pulse width modulator (CB20770E)
This linear modulator was found in old documentation. The integrated circuit used is uncommon...