This circuit was found in Texas Instruments documentation from 1968. The transistors are from that time, admitting modern equivalents. The response ranges is from 20 to 20 000 Hz.
We found this circuit in Ferranti's 1974 transistor manual. Transistors are general-purpose types...
Taken from the 1982 SGS manual on integrated circuits, this preamplifier was used in commercial...
This decoder TTL circuit for 15-channel remote control was found in Selezione Radio, Italian...