Volume Expander (CB14626E)

The circuit shown is from the National Semiconductor FET manual. Both operational and FETs admit equivalents.

| Clique na imagem para ampliar |

Old Light Alarm (CB18346E)
We found this circuit in Japanese documentation from the 1960s. Transistors are types of the time...
NAB preamplifier for recording heads (CB12969E)
Many collectors of records, tapes and even audiophiles often keep recordings on tapes that...
Two Position Servo System (CB19799E)
This lockable two-position servo control system was found in documentation from the 1990s. The...